Answer:
length = 10.95
width = 3.65 ft
Explanation:
Area of rectangle is length times width
let width = w
From the problem, it says that the length is 3 times the width
length = 3w
plug in to the formula
A = LxW
40ft² = 3w x w
40ft² = 3w²
divide both sides by 3
13.3333... = w²
then find the square of both sides
w = 3.65...ft
length = 3w
=3(3.65...)
length = 10.95 ft