The perimeter of Jonah's square backyard is 56 meters. What is the area of Jonah's backyard?

Answer 1

Let s = length of side of the square.

The perimeter of the square is s + s + s + s or 4s since all sides of a square are equal.

That means: 56 = 4s (perimeter is 56). So, s = 56/4 = 14.

The area of a square is side squared (or, length times width).

A = s²

Since we know that s = 14 the area must be 14²=196 meters²