Question

The area of a square ice rink is 400 yd.². What is the perimeter of the rink in yards

Answer 1

80 yd^2

Explanation:

Since the formula for squares is s^2, we can use this to set up an equation, which is

s^2=400

If we square root this, we get

s=20

The perimeter formula for a square is 4s, so if we plug in, we end up with 80 yd^2