The ratio between the perimeter and the width of a rectangle is 5:1. If the area of the rectangle is 54 square centimeters, what is the length of the rectangle in centimeters? Choose the correct choice from the following choices:  A) 6  B) 7  C) 8  D) 9  E) 10
Perimeter = 2(W+L) = 5W   3W = 2L   W = 2L/3   WL = 54   2L^2/3 = 54   L^2 = 81   L = 9 cm   The answer is 9.
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The ratio between the perimeter and the width of a rectangle is 5:1. If the area of the rectangle is 54 square centimeters, what is the length of the rectangle in centimeters?