Calculate Side Length AE in a Parallelogram with Area 63 cm²

Parallelogram Area with Insufficient Information

The parallelogram ABCD is shown below.

Its area is equal to 63 cm².

Calculate side AE.

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:09 Let's find the measurement of A E.
00:12 We'll use the formula for the area of a parallelogram.
00:18 That's side D C times the height A E.
00:23 Let's substitute the known values and see if we can solve it.
00:27 Oops! We have too many unknowns, so we can't solve it now.
00:31 And that's how we approach this kind of question!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

The parallelogram ABCD is shown below.

Its area is equal to 63 cm².

Calculate side AE.

777AAABBBCCCDDDEEE

2

Step-by-step solution

To assess whether side AEAE can be calculated, we generally consider using the formula for the area of a parallelogram, Area=base×height \text{Area} = \text{base} \times \text{height} . However, this requires knowing or specifying both the base and height, which are not provided in this problem. Without explicit dimensions or angles that specify AEAE directly, it is not possible to isolate and calculate AEAE merely from the area alone.

Given the lack of adequate information about base lengths, height, or angles essential for such calculations, particularly when specific side lengths or geometric properties are needed, we conclude that it is not possible to calculate the length of side AEAE.

Therefore, the appropriate conclusion is that it is not possible to calculate side AEAE with the information provided.

3

Final Answer

It is not possible to calculate.

Key Points to Remember

Essential concepts to master this topic
  • Area Formula: Area equals base times height for parallelograms
  • Information Check: Need both base and height values to calculate sides
  • Verification: Always confirm you have enough given data before attempting calculations ✓

Common Mistakes

Avoid these frequent errors
  • Assuming you can calculate any side from area alone
    Don't try to find side AE using just Area = 63 cm² = wrong calculations! The area formula needs TWO measurements (base and height), but we only know the area. Always check that you have sufficient information before starting calculations.

Practice Quiz

Test your knowledge with interactive questions

Calculate the area of the parallelogram according to the data in the diagram.

101010777AAABBBCCCDDDEEE

FAQ

Everything you need to know about this question

Why can't I find side AE if I know the area?

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The area formula is Area=base×height \text{Area} = \text{base} \times \text{height} . With only the area (63 cm²), you have one equation but two unknowns. You need at least one more measurement to solve for specific sides.

What information would I need to calculate AE?

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You'd need either:

  • The height of the parallelogram, OR
  • Another side length and an angle, OR
  • Additional geometric relationships between the sides

Is there any way to find AE from this diagram?

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From the diagram, we can see that AD = 7, but AE appears to be the height (perpendicular line). Without knowing the base length or angles, we cannot determine AE's exact value.

How do I know when a geometry problem is unsolvable?

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Count your knowns vs unknowns. If you have more unknown values than independent equations/relationships, the problem cannot be solved. Always identify what you need before attempting calculations.

What does 'not possible to calculate' mean in math?

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It means there isn't enough information given to find a unique answer. This is a valid mathematical conclusion - recognizing insufficient data is just as important as solving when you can!

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