a rectangle is 2 times as long as it is wide. if the area is 72 square feet, find it's perimeter

Question

Math word problem finding the perimeter of a rectangle.

Answer 1

Area = Length x width

Length = 2 x width

 

72 = 2 x width x width

 

72 = 2 x width^2

 

36 = width ^2 

 

width = 6

 

length = 12

 

area is 72

 

perimeter = 2 x 12 + 2 x 6 = 24 + 12 = 36