Calculate Square Perimeter: Given Area = 3²√16 Square Units

Square Geometry with Exponential Expressions

Given the area of the square ABCD is

3216 3^2\sqrt{16}

Find the perimeter.

❤️ Continue Your Math Journey!

We have hundreds of course questions with personalized recommendations + Account 100% premium

Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Determine the perimeter of the square
00:03 In a square, all sides are equal
00:08 We'll use the formula for calculating square area (side squared)
00:15 Substitute in the appropriate values and solve for A
00:18 Calculate the power and the root
00:27 Extract the root to isolate side A
00:33 This is the length of the square's side
00:40 In a square all sides are equal, therefore the perimeter equals 4 times A
00:44 This is the solution

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Given the area of the square ABCD is

3216 3^2\sqrt{16}

Find the perimeter.

2

Step-by-step solution

To find the perimeter of the square ABCD, we first need to determine the side length of the square using the given area. The area of a square is calculated using the formula: Area=s2 \text{Area} = s^2 , where s s is the side length of the square.

According to the problem, the area of the square is given by the expression 3216 3^2\sqrt{16} .

Let's simplify this expression:

  • First, calculate 32 3^2 , which is 9 9 .

  • Next, calculate 16 \sqrt{16} , which is 4 4 .

Now, multiply these results: 9×4=36 9 \times 4 = 36 .

Thus, the area of the square is 36 36 .

Since the area is s2=36 s^2 = 36 , we can solve for s s :

  • Find the square root of both sides: s=36 s = \sqrt{36} .

  • This gives s=6 s = 6 .

Now that we have the side length s=6 s = 6 , we can find the perimeter. The perimeter P P of a square is given by:

P=4s P = 4s .

Substituting the side length, we get:

  • P=4×6=24 P = 4 \times 6 = 24 .

The solution to the question is: 24 24

3

Final Answer

24 24

Key Points to Remember

Essential concepts to master this topic
  • Area Formula: For squares, Area = s² where s is side length
  • Technique: Simplify 3216=9×4=36 3^2\sqrt{16} = 9 \times 4 = 36 first
  • Check: Verify s = 6 gives Area = 36, then P = 4(6) = 24 ✓

Common Mistakes

Avoid these frequent errors
  • Using area formula for perimeter calculation
    Don't use P = 4 × Area = 4 × 36 = 144! This treats area as side length, giving a massively wrong perimeter. Always find the side length first by taking the square root of the area, then multiply by 4.

Practice Quiz

Test your knowledge with interactive questions

What is the result of the following equation?

\( 36-4\div2 \)

FAQ

Everything you need to know about this question

Why do I need to simplify the area expression first?

+

You must simplify 3216 3^2\sqrt{16} to get a clear numerical value for the area. Without simplifying, you can't easily find the square root to get the side length!

How do I know which square root to take?

+

Since we're finding a side length, we always take the positive square root. Side lengths can't be negative in geometry!

What if I can't simplify the square root easily?

+

For this problem, 36=6 \sqrt{36} = 6 is a perfect square. If you get non-perfect squares, use a calculator or leave it in radical form like 50 \sqrt{50} .

Can I work backwards from the answer choices?

+

Yes! If the perimeter is 24, then each side is 24÷4=6 24 ÷ 4 = 6 . Check: Area = 62=36 6^2 = 36 , which matches 3216=36 3^2\sqrt{16} = 36

Why are the other answer choices wrong?

+

Let's check: 232=16 2^3 \cdot 2 = 16 , 24=16 2^4 = 16 , and 42=16 4^2 = 16 . All give perimeter 16, meaning side length 4 and area 42=1636 4^2 = 16 ≠ 36 .

🌟 Unlock Your Math Potential

Get unlimited access to all 18 Square for 9th Grade questions, detailed video solutions, and personalized progress tracking.

📹

Unlimited Video Solutions

Step-by-step explanations for every problem

📊

Progress Analytics

Track your mastery across all topics

🚫

Ad-Free Learning

Focus on math without distractions

No credit card required • Cancel anytime

More Questions

Click on any question to see the complete solution with step-by-step explanations