Question

The area of a square is 256 sq. cm. So what is the perimeter of that square?
1. 16 cm
2. 15 cm
3. 64 cm
4. 4 cm

Answer 1

Correct Answer - Option 3 : 64 cm

Given:

The area of square = 256 sq.

Formula used:

The perimeter of square = 4 × a

Calculation: 

We know that area of square = a²   , where a = side of square 

So, a² = 256 sq.

⇒ a = √256

⇒ a = 16 

Now,

Perimeter of square = 4 × 16 = 64

∴The perimeter of that square is 64 .