A square has an area of 90, and its perimeter could be found by evaluating the expression: 4 square route 90. What is the perimeter of the square?

Question

Answer as a decimal.

Answer 1

To break down the problem, the area is the side squared. That is:

A = s²

In this case, A = 90, so:

90 = s²

√90 = √s²

9.487 ≈ s

 

Squares have 4 equal sides, so P = 4s

4 * 9.487 = 37.948

So the perimeter is approximately 37.948 around.

Answer 2

4√90 = 37.95