SOLUTION: The width of a rectangle is 7 feet longer than the length. If the area is 330 square feet, find the dimensions of the rectangle.

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Question 302437: The width of a rectangle is 7 feet longer than the length. If the area is 330 square feet, find the dimensions of the rectangle.
Answer by london maths tutor(243) About Me  (Show Source):
You can put this solution on YOUR website!
Area of a rectangle = width x length
let's width be w and length be L
w = 7 + L
Area : L(7+L) = 330
7L+%2B+L%5E2+=+330
+L%5E2+%2B7L+-+330+=+0+
+%28L+-+15%29%28L+%2B+2%29=0
L -15 = 0 , L = 15 ft or L + 2 = 0 L = -2ft (N/A)
Length = 15 ft
Therefore width = 7 + 15 = 22 ft