Question

Supposed the length of a rectangle is three times the width and the area is 300 ft.² then what is the width of the rectangle in feet

Answer 1

Explanation:

the area is

A = length × width.

length = 3 × width

=>

A = 3 × width × width = 3 × width²

300 = 3 × width²

100 = width²

width = 10 ft