SOLUTION: if the sides of a square are increased by 3cm its' area becomes 100 square cm. find the length of the sides of the original square.
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Question 138350: if the sides of a square are increased by 3cm its' area becomes 100 square cm. find the length of the sides of the original square. Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! (X+3)^2=100
X^2+6X+9=100
X62+6X+9-100=0
X^2+6X-91=0
(X-7)(X+13)=0
X-7=0
X=7cm. FOR THE ORIGINAL SIDE OF THE SQUARE.
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