SOLUTION: The width of a rectangular poster is half its length. The area of the poster is 128 square feet. What is the length of the poster?
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Question 601633: The width of a rectangular poster is half its length. The area of the poster is 128 square feet. What is the length of the poster? Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! The width of a rectangular poster is half its length. The area of the poster is 128 square feet. What is the length of the poster?
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Let x = length (feet) of poster
then
x/2 = width (feet) of poster
.
x(x/2) = 128
x^2/2 = 128
x^2 = 256
x = 16 feet (length)
