SOLUTION: when the sides of a square are increased by 3 feet, the area becomes 25 square feet. find the length of the side of the original square
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Question 691372: when the sides of a square are increased by 3 feet, the area becomes 25 square feet. find the length of the side of the original square
Answer by mouk(232) (Show Source): You can put this solution on YOUR website!
Let the original side of the square be , then new side is
New Area = 25 so
(this is a quadratic ...)
(... which factorises nicely)
so or
But x is the side of a rectangle, so
Hence, solution is
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