SOLUTION: if the sides of a square are increased by 5 feet, the new area is 81 square feet. How long is each side of the original square?

Algebra ->  Rectangles -> SOLUTION: if the sides of a square are increased by 5 feet, the new area is 81 square feet. How long is each side of the original square?      Log On


   

Question 965095: if the sides of a square are increased by 5 feet, the new area is 81 square feet. How long is each side of the original square?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
if the sides of a square are increased by 5 feet, the new area is 81 square feet. How long is each side of the original square?
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Original side:: x ; Original area = x^2
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New side:: x+5 ; New area = (x+5)^2
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Equation:
(x+5)^2 = 81
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x+5 = 9
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x = 4 ft (length of each side of the original square)
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Cheers,
Stan H.
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