A rectangular athletic field is twice as long as it is wide. If the perimeter of the athletic field is 216 yards, what are its dimensions?

236 (56) 123) 97 (50) 12 (4

A Rectangle has 4 sides so let x = width and 2x equal length so it should read as follows: 2 (2x) + 2 (x) = 216 (perimeter)

4x+2x=216

6x=216

divide by 6 both sides to isolate x

x=36

check equation

2 (36) = 72

2 (72) = 144

72 + 144=216