Raymond B. answered 02/28/22
Math, microeconomics or criminal justice
L=4+W
Area = LW = (4+W)W = W^2 +4W = 320
W^2 +4W + 4 = 320+4
(W+2)^2 = 324
W+2 = sqr324 = 18
W = 16 feet wide
L = 20 feet long
Harley E.
asked 02/28/22A rectangular deck has an area of 320 ft2. The length of the deck is 4 feet longer than the width. Find the dimensions of the deck. Solve by completing the square.
Raymond B. answered 02/28/22
Math, microeconomics or criminal justice
L=4+W
Area = LW = (4+W)W = W^2 +4W = 320
W^2 +4W + 4 = 320+4
(W+2)^2 = 324
W+2 = sqr324 = 18
W = 16 feet wide
L = 20 feet long
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