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?

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

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