Compare Perimeter vs Area: 3-Unit Square Analysis

Perimeter vs Area with Unit Squares

Look at the square below:

333

Is the value of the perimeter of the square greater than its area?

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Is the perimeter of the square greater than its area?
00:03 Side length according to the given data
00:07 The perimeter of the square equals the sum of its sides
00:11 Let's substitute appropriate values and solve for the perimeter
00:14 This is the perimeter of the square
00:18 Let's use the formula for calculating the area of a square (side squared)
00:25 Let's substitute appropriate values and solve for the area
00:32 The perimeter of the square is greater than its area
00:35 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Look at the square below:

333

Is the value of the perimeter of the square greater than its area?

2

Step-by-step solution

Let's remember that the area of the square is equal to the side of the square raised to the second power.

Also, the perimeter of the square is equal to the side multiplied by 4.

We calculate the area of the square:
A=32=9 A=3^2=9

We calculate the perimeter of the square:

3×4=12 3\times4=12

Therefore, the perimeter is greater than the area of the square.

3

Final Answer

Yes

Key Points to Remember

Essential concepts to master this topic
  • Formula Rule: Area = side², Perimeter = 4 × side
  • Calculation: Area = 3² = 9, Perimeter = 4 × 3 = 12
  • Verification: Compare final values: 12 > 9, so perimeter is greater ✓

Common Mistakes

Avoid these frequent errors
  • Confusing area and perimeter formulas
    Don't use side × 4 for area or side² for perimeter = completely wrong values! This mixes up two different measurements. Always remember: area measures space inside (side²), perimeter measures distance around (4 × side).

Practice Quiz

Test your knowledge with interactive questions

Look at the square below:

555

What is the area of the square equivalent to?

FAQ

Everything you need to know about this question

Why is the perimeter bigger than the area for a 3×3 square?

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This happens with small squares! When the side length is small, the perimeter (12) grows slower than area would for larger squares. Try a 5×5 square: area = 25, perimeter = 20 - now area is bigger!

Will perimeter always be greater than area?

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No! It depends on the side length. For squares with sides less than 4 units, perimeter > area. For sides greater than 4 units, area > perimeter. At exactly 4 units, they're equal!

How do I remember which formula is which?

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Think about what you're measuring: Area fills the inside space (like tiles), so you multiply length × width = side². Perimeter goes around the edge (like a fence), so you add all 4 sides = 4 × side.

What units should I use for my answer?

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For a 3-unit square: area is 9 square units and perimeter is 12 units. Area always uses square units because you're measuring a flat space!

Can I solve this without calculating both values?

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You could set up the inequality: 4s>s2 4s > s^2 where s = 3. But it's usually easier and clearer to just calculate both values and compare them directly.

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