The area of a rectangle is 61 square units. If the length is 3 times the width find dimensions

Question

Quad formula college algebra math word problem.

 

The area of a rectangle is 61 square units. If the length is 3 times the width, then find the dimensions of the rectangle. Round off your answers to the nearest hundredth.

Answer 1

Let w = the width

Let 3w = the length

A = lw

61 = (3w)(w)

61 = 3w²

61/3 = w²      Take the square root of both sides.

4.51 = w

3w = 13.53 = length