Question

A city is building a fence around a rectangular playground. If the perimeter of the playground is 102 feet and the length of one sideof the fence is 31 feet, what is the width of the playground?

Answer 1

Perimeter = 2( L + W)

102 = 2( 31 + W)

Divide both sides by 2,

51 = 31 + W

51 - 31 = W

W = 20 feet

so, the width of the playground is 20 feet.