if the area of a rectangle is132, height is 8,length is (3x-6) length equals?
Area is length times width, or in this case, length times height.
8 * (3x - 6) = 132
24x - 48 = 132
24x = 132 + 48 = 180
x = 180 / 24 = 7.5
length = (3x - 6) = (3 * 7.5) - 6 = 22.5 - 6 = 16.5
8 * 16.5 = 132 verified