26. A rectangle is 10 cm long and 8 cm wide. When each side of the rec – InterviewSolution

1.	26. A rectangle is 10 cm long and 8 cm wide. When each side of the rectangle is increasedby r cm, its perimeter is doubled. Find the equation in x and hence find the area ofthe new rectangle.
Answer» initial perimeter is 10+8=18now after increasing x perimeter doubledso 10+x+8+x=36so 2x=18so x=9so area of new rectangle 19*17=323 cm^2

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