Question

The dimensions of a rectangle has aa width of three more than three times its lenght.Find the dimensions if the area of the rectangle is 36m to the second power.

Answer 1

A) width = length * 3
B) width * length = 36

Substituting equation A) into B)
length * 3 * length = 36
3 * length^2 -36 = 0
length ^2 -12 = 0
length = 3.4641
width = 3 * 3.4641 = 10.3923

****************************************
Double-check

area = 3.4641 * 10.3923
area = 36