Question

The expression 2(l+w) may be used to find the perimeter of a rectangle. What are the length and width of a rectangle if the area is 13 1/2 square units and the length of one side is 1/5 the measure of the perimeter?
"the length of one side is 1/5 the measure of the perimeter" --> l = (1/5(2(l+w))
5l = 2l + 2w
3l = 2w
l = 2w/3

lw = 13.5
(2w/3)(w) = 13.5
w^2 = 20.25
w = sqrt(20.25) = 4.5
then l = 3

Related Questions

The lenght of a rectangle is 10cm greater than its width. The perimeter of the rectangle is 1m. A.Fi... The formula for the perimeter of a rectangle is P = 2l + 2w. The length of a rectangle is 3 times it... The perimeter of a rectangle is given by the expression 2vv + 21, where w is the width and I is the...