Examples with solutions for Area of the Square: Identify the greater value

Exercise #1

Given that the length of the sides of square 1 is 6

and the length of the side of square 2 is 7.

Which square has the larger area, 1 or 2?

Video Solution

Step-by-Step Solution

To solve this problem, we will calculate the area of each square and compare them:

  • Step 1: Calculate the area of square 1.
  • Step 2: Calculate the area of square 2.
  • Step 3: Compare the areas to find which square has a larger area.

Let's work through these steps:

Step 1:

The area of a square is calculated using the formula:

Area=side length2 \text{Area} = \text{side length}^2

For square 1, the side length is 6:

Area1=62=36 \text{Area}_1 = 6^2 = 36

Step 2:

For square 2, the side length is 7:

Area2=72=49 \text{Area}_2 = 7^2 = 49

Step 3:

Now, compare the two areas:

36 36 (Area of square 1) is less than 49 49 (Area of square 2).

Therefore, square 2 has a larger area.

Based on our calculations, the square with the larger area is square 2.

Answer

2

Exercise #2

The side length of a square is X cm

(x>3) (x>3)

We extend one side by 3 cm and shorten an adjacent side by 3 cm, and we get a rectangle.

Which shape has a larger area?

Video Solution

Step-by-Step Solution

To determine which shape has a larger area, we need to compare the areas of the square and the rectangle:

  • Step 1: Calculate the area of the original square:

The side length of the square is X X , so its area is given by:

Area of square=X2 \text{Area of square} = X^2
  • Step 2: Calculate the area of the rectangle:

The dimensions of the rectangle are X+3 X + 3 cm and X3 X - 3 cm. Thus, its area is:

Area of rectangle=(X+3)(X3) \text{Area of rectangle} = (X + 3)(X - 3)

Using the difference of squares formula, we find:

(X+3)(X3)=X29 (X + 3)(X - 3) = X^2 - 9
  • Step 3: Compare the areas:

We compute the difference between the square's area and the rectangle's area:

X2(X29)=9 X^2 - (X^2 - 9) = 9

Since 9 is positive, the area of the square is larger than the area of the rectangle.

Therefore, the square has a larger area than the rectangle.

Answer

The square