Given the area of a square, find the length of one side. The area of a square piece of plywood is 81 in.2

Question

36 in.

81 in.

10 in.

 

9 in.

Answer 1

The area of a square is A = s² where s is the length of the side.

 

If the area is 81, then 81 = s²

 

Take the square root to find s