Question

2. The area of a square is 72 sq in. What is its side length?

Answer 1

`6 √(2)`

if you don't have to simplify it, it is

`√(72)`

Explanation:

the equation for the area of a square is

`a = {s}^(2)`

substitute 72 for a

`72 = {s}^(2)`

take the square root of both sides to cancel out the square on the s

`√(72) = \sqrt{ {s}^(2) }`

`√(72) = s`

if you need it simplified, find the perfect square that makes up 72. It is 36.

`√(36 * 2) = s`

take the square root of 36

`6 √(2) = s`