Examples with solutions for Area of a Parallelogram: Applying the formula

Exercise #1

Calculate the area of the following parallelogram:

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Video Solution

Step-by-Step Solution

To calculate the area of the parallelogram, we will simply apply the formula for the area of a parallelogram:

  • Identify the base: The length of the base is 10cm10 \, \text{cm}.
  • Identify the height: The perpendicular height is given as 6cm6 \, \text{cm}.

Apply the formula: Area=base×height \text{Area} = \text{base} \times \text{height} .

Substitute the known values: Area=10cm×6cm \text{Area} = 10 \, \text{cm} \times 6 \, \text{cm} .

Calculate the result: Area=60cm2 \text{Area} = 60 \, \text{cm}^2 .

Therefore, the area of the parallelogram is 60cm2 60 \, \text{cm}^2 .

Answer

60 cm²

Exercise #2

Calculate the area of the following parallelogram:

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Video Solution

Step-by-Step Solution

To solve the exercise, we need to remember the formula for the area of a parallelogram:

Side * Height perpendicular to the side

In the diagram, although it's not presented in the way we're familiar with, we are given the two essential pieces of information:

Side = 6

Height = 5

Let's now substitute these values into the formula and calculate to get the answer:

6 * 5 = 30

Answer

30 cm²

Exercise #3

ABCD is a parallelogram.

AH is the height.

DC = 6
AH = 3

What is the area of the parallelogram?

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Video Solution

Step-by-Step Solution

To solve this problem, let's apply the formula for the area of a parallelogram:

  • The given base DC DC is 6 cm.
  • The perpendicular height AH AH from point A A to base DC DC is 3 cm.

The formula for the area of a parallelogram is:

Area=base×height \text{Area} = \text{base} \times \text{height}

Substituting the given values, we have:

Area=6×3 \text{Area} = 6 \times 3

Thus, the area of parallelogram ABCDABCD is:

Area=18cm2 \text{Area} = 18 \, \text{cm}^2

Therefore, the solution to the problem is 18cm218 \, \text{cm}^2.

Answer

18 cm²

Exercise #4

ABCD is a parallelogram.

AH is its height.

Given in cm:

AB = 7

AH = 2

Calculate the area of the parallelogram.

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Video Solution

Step-by-Step Solution

To find the area of the parallelogram, we follow these steps:

  • Step 1: Identify the base and height.
    Here, the base AB AB is 7cm 7 \, \text{cm} and the perpendicular height AH AH is 2cm 2 \, \text{cm} .
  • Step 2: Use the area formula for a parallelogram:
    Area=base×height \text{Area} = \text{base} \times \text{height}
  • Step 3: Substitute the given values into the formula:
    Area=7×2=14cm2 \text{Area} = 7 \times 2 = 14 \, \text{cm}^2

Therefore, the area of the parallelogram is 14 cm2 \textbf{14 cm}^2 .

Answer

14 cm².

Exercise #5

Given the parallelogram of the figure

What is your area?

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Video Solution

Step-by-Step Solution

To find the area of the parallelogram, we will use the formula:

A=base×height A = \text{base} \times \text{height}

From the problem, we identify the base as 7cm 7 \, \text{cm} and the height as 4cm 4 \, \text{cm} . Substituting these values into the formula, we get:

A=7cm×4cm=28cm2 A = 7 \, \text{cm} \times 4 \, \text{cm} = 28 \, \text{cm}^2

Therefore, the area of the parallelogram is 28cm2 28 \, \text{cm}^2 .

Answer

28cm2 28\operatorname{cm}^2

Exercise #6

Given the parallelogram of the figure

What is your area?

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Video Solution

Step-by-Step Solution

To find the area of the parallelogram, follow these steps:

  • Step 1: Identify the given dimensions.
    We have a base b=8 b = 8 and a height h=3 h = 3 .
  • Step 2: Apply the area formula for a parallelogram.
    The area A A is given by the formula A=b×h A = b \times h .
  • Step 3: Perform the calculation.
    Substitute the known values into the formula to get A=8×3=24 A = 8 \times 3 = 24 .

Therefore, the area of the parallelogram is 24 24 .

Answer

24 24

Exercise #7

Below is the parallelogram ABCD.

AEC = 90°

What is the area of the parallelogram?

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Video Solution

Step-by-Step Solution

To find the area of parallelogram ABCD, we will follow these steps:

  • Step 1: Identify the base and height from the given diagram.
  • Step 2: Apply the area formula for the parallelogram.
  • Step 3: Calculate the area using the identified base and height.

Let's execute these steps:

Step 1: In parallelogram ABCD, the length of side CD is given as 11 cm. Since angle AEC is a right angle, AE, which measures 9 cm, serves as the height of the parallelogram.

Step 2: Use the formula for the area of a parallelogram:
Area=base×height \text{Area} = \text{base} \times \text{height}

Step 3: Substitute the values into the formula:
Area=11cm×9cm=99cm2 \text{Area} = 11 \, \text{cm} \times 9 \, \text{cm} = 99 \, \text{cm}^2

Thus, the area of the parallelogram ABCD is 99cm2\mathbf{99 \, \text{cm}^2}.

Answer

99 99 cm².

Exercise #8

Look at the parallelogram in the figure.

h = 6

What is the area of the parallelogram?

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Video Solution

Step-by-Step Solution

To find the area of the given parallelogram, we will use the standard formula for the area of a parallelogram, which is the product of its base and height.

  • Step 1: Identify the given dimensions.
  • Step 2: Base of the parallelogram is given as 13 13 cm.
  • Step 3: Height is given as 6 6 cm.

Now, let's proceed with the calculation:

Using the formula for the area of a parallelogram:

Area=base×height \text{Area} = \text{base} \times \text{height}

Substituting the known values:

Area=13cm×6cm \text{Area} = 13 \, \text{cm} \times 6 \, \text{cm}

Area=78cm2 \text{Area} = 78 \, \text{cm}^2

Hence, the area of the parallelogram is 78cm2\mathbf{78 \, \text{cm}^2}.

Answer

78 78 cm².

Exercise #9

Given the parallelogram of the figure

What is your area?

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Video Solution

Step-by-Step Solution

The area of a parallelogram is calculated using the formula A=base×height A = \text{base} \times \text{height} .

From the figure, we identify the base BC BC as 9 cm and the perpendicular distance (height) from point E E to BC BC as 5 cm.

Substituting into the formula for area, we have:

A=9cm×5cm=45cm2 A = 9 \, \text{cm} \times 5 \, \text{cm} = 45 \, \text{cm}^2

Therefore, the area of the parallelogram is 45cm2 45 \, \text{cm}^2 .

Looking at the provided answer choices, the correct choice is:

45 45 cm².

Answer

45 45 cm².

Exercise #10

AB = 15 cm

The height of the rectangle is 6 cm.

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Calculate the area of the parallelogram.

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the given base and height.
  • Step 2: Apply the formula for the area of a parallelogram.
  • Step 3: Calculate the area using the provided dimensions.

Now, let's work through each step:
Step 1: The base b b is equal to the length AB AB , which is 15 cm\text{15 cm}. The height h h corresponding to this base is 6 cm\text{6 cm}.
Step 2: We'll use the formula for the area of a parallelogram:
Area=b×h\text{Area} = b \times h.
Step 3: Plugging in our values, we have:
Area=15×6=90cm2\text{Area} = 15 \times 6 = 90 \, \text{cm}^2.

Therefore, the solution to the problem is Area=90cm2 \text{Area} = 90 \, \text{cm}^2 , which matches choice .

Answer

90

Exercise #11

AB = 10 cm

The height of the rectangle is 5 cm.

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Calculate the area of the parallelogram.

Video Solution

Step-by-Step Solution

To solve this problem, we'll apply the formula for the area of a parallelogram:

  • Step 1: Identify the base and the height from the given information.
  • Step 2: Use the formula for the area of a parallelogram: A=base×height A = \text{base} \times \text{height} .
  • Step 3: Calculate the area using the given values.

Let's proceed with the solution:
Step 1: The given base AB AB is 10 cm, and the height is 5 cm.
Step 2: The formula for the area of a parallelogram is A=base×height A = \text{base} \times \text{height} .
Step 3: Substituting the provided values, we get:
A=10cm×5cm A = 10 \, \text{cm} \times 5 \, \text{cm}
A=50cm2 A = 50 \, \text{cm}^2

Therefore, the area of the parallelogram is 50cm2 50 \, \text{cm}^2 .

Answer

50

Exercise #12

AB = 32 cm

The height of the rectangle is 15 cm.

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Calculate the area of the parallelogram.

Video Solution

Step-by-Step Solution

To calculate the area of the parallelogram, we'll use the standard area formula for a parallelogram:

Area=base×height\text{Area} = \text{base} \times \text{height}

From the problem, the base AB=32cm AB = 32 \, \text{cm} and the height is 15cm 15 \, \text{cm} .

Substituting these values into the formula gives:

Area=32×15\text{Area} = 32 \times 15

Perform the multiplication:

32×15=48032 \times 15 = 480

Thus, the area of the parallelogram is 480 cm2 \text{480 cm}^2 .

The correct answer is choice 4: 480.

Answer

480

Exercise #13

AB = 5 cm

The height of the rectangle is 2 cm.

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Calculate the area of the parallelogram.

Video Solution

Step-by-Step Solution

To find the area of the parallelogram, we will follow these steps:

  • Identify the base and the corresponding height.
  • Use the formula for the area of a parallelogram.
  • Perform the calculation to find the area.

Let's execute these steps:

Step 1: Identify the given measurements. The base AB=5cm AB = 5 \, \text{cm} , and the height corresponding to it is 2cm 2 \, \text{cm} .

Step 2: Apply the formula for the area of a parallelogram, which is A=b×h A = b \times h .

Step 3: Substitute the known values into the formula:
A=5cm×2cm=10cm2 A = 5 \, \text{cm} \times 2 \, \text{cm} = 10 \, \text{cm}^2

Therefore, the area of the parallelogram is 10cm2 10 \, \text{cm}^2 .

Answer

10

Exercise #14

AB = 25 cm

The height of the rectangle is 13 cm.

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Calculate the area of the parallelogram.

Video Solution

Step-by-Step Solution

To calculate the area of the parallelogram, we'll use the formula for the area, which is the product of the base and the height.

  • Identify the base and height from the information given: The base AB AB is 25 cm and the height is 13 cm.
  • Apply the formula for the area: Area=Base×Height\text{Area} = \text{Base} \times \text{Height}.
  • Substitute the given values into the formula: Area=25×13\text{Area} = 25 \times 13.
  • Perform the multiplication: Area=325\text{Area} = 325 square centimeters.

Therefore, the area of the parallelogram is 325cm2 325 \, \text{cm}^2 .

This corresponds to choice 1: 325.

Answer

325

Exercise #15

AB = 3 cm

Height of the rectangle = 1.5 cm

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Calculate the area of the parallelogram.

Video Solution

Step-by-Step Solution

To calculate the area of the given parallelogram, we'll proceed with the following steps:

  • Identify the base and height of the parallelogram.
  • Apply the formula for the area of a parallelogram.
  • Calculate the area using the provided measurements.

Step 1: Identify the given dimensions:

The base b b is given as 3 cm, and the height h h is 1.5 cm.

Step 2: Apply the area formula for a parallelogram:

The formula for the area of a parallelogram is A=b×h A = b \times h .

Step 3: Substitute the known values into the formula:

A=3×1.5 A = 3 \times 1.5 .

Step 4: Perform the multiplication:

A=4.5 A = 4.5 square centimeters.

Thus, the area of the parallelogram is 4.5 4.5 square centimeters.

Answer

4.5

Exercise #16

AB = 12 cm

The height of the rectangle is 4 cm.

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Calculate the area of the parallelogram.

Video Solution

Step-by-Step Solution

To solve this problem, we'll proceed as follows:

  • Step 1: Identify the given values for the base and the height of the parallelogram.
  • Step 2: Apply the formula for calculating the area of the parallelogram.
  • Step 3: Calculate the area using the values provided.

Let's perform each step:

Step 1: From the problem, we know:

  • The base AB AB of the parallelogram is 12cm 12 \, \text{cm} .
  • The height relative to the base is 4cm 4 \, \text{cm} .

Step 2: Use the formula for the area of a parallelogram:

Area=base×height\text{Area} = \text{base} \times \text{height}

Step 3: Plugging in the values of the base and height:

Area=12×4=48cm2\text{Area} = 12 \times 4 = 48 \, \text{cm}^2

Therefore, the area of the parallelogram is 48cm2 48 \, \text{cm}^2 .

Since this is a multiple-choice problem, the correct answer is Choice 2.

Answer

48

Exercise #17

AB = 17 cm

The height of the rectangle is 8 cm.

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Calculate the area of the parallelogram.

Video Solution

Step-by-Step Solution

To solve this problem, we will calculate the area of the parallelogram using the given base and height dimensions.

  • Step 1: Identify the given parameters. The base of the parallelogram AB=17cm AB = 17 \, \text{cm} and the corresponding height is 8cm 8 \, \text{cm} .
  • Step 2: Apply the area formula for parallelograms: Area=base×height\text{Area} = \text{base} \times \text{height}.
  • Step 3: Substitute the given values into the formula: Area=17×8 \text{Area} = 17 \times 8 .

Calculating the product, we have:
Area=136cm2 \text{Area} = 136 \, \text{cm}^2 .

Therefore, the area of the parallelogram is 136cm2 136 \, \text{cm}^2 .

Answer

136

Exercise #18

AB = 7 cm

Height of the rectangle = 3.5 cm

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Calculate the area of the parallelogram.

Video Solution

Step-by-Step Solution

To calculate the area of the parallelogram, we will use the formula:

Step 1: Identify provided values:
- Base b=7 b = 7 cm
- Height h=3.5 h = 3.5 cm

Step 2: Substitute into the area formula:
Area=b×h=7×3.5\text{Area} = b \times h = 7 \times 3.5

Step 3: Perform the calculation:
Area=24.5cm2\text{Area} = 24.5 \, \text{cm}^2

Therefore, the area of the parallelogram is 24.5 cm2^2.

Answer

24.5

Exercise #19

AB = 6 cm

The height of the rectangle is 2 cm.

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Calculate the area of the parallelogram.

Video Solution

Step-by-Step Solution

To solve this problem, we'll calculate the area of the parallelogram using the following steps:

  • Step 1: Identify the base and the height from the given information.
  • Step 2: Use the formula for the area of a parallelogram: Area=base×height \text{Area} = \text{base} \times \text{height} .
  • Step 3: Substitute the values and compute the area.

Now, let's perform these steps:

Step 1: The base ABAB is given as 6 cm, and the height perpendicular to this base is 2 cm.

Step 2: Using the formula for the area of a parallelogram, we have:

Area=base×height\text{Area} = \text{base} \times \text{height}

Step 3: Substituting the given values:

Area=6cm×2cm=12cm2\text{Area} = 6 \, \text{cm} \times 2 \, \text{cm} = 12 \, \text{cm}^2

Thus, the area of the parallelogram is 12 square centimeters.

The correct answer is choice 1: 12.

Answer

12

Exercise #20

A parallelogram has a length equal to 6 cm and a height equal to 4.5 cm.

Calculate the area of the parallelogram.

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Video Solution

Step-by-Step Solution

To solve this problem, let's apply the formula for the area of a parallelogram:

The formula for the area of a parallelogram is Area=base×height \text{Area} = \text{base} \times \text{height} .

Here, the base of the parallelogram is 6 cm, and the height is 4.5 cm.

Substituting these values into the formula gives:

Area=6×4.5 \text{Area} = 6 \times 4.5

Performing the multiplication:

Area=27 \text{Area} = 27 square centimeters.

Therefore, the area of the parallelogram is 27cm2 27 \, \text{cm}^2 .

Referring to the given multiple-choice answers, the correct choice is:

Choice 3: 27 27 .

Answer

27

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