Homework Help: math

Posted by walter on Tuesday, October 18, 2011 at 9:32pm.

one side of a square is decreased by 20% while its adjecent side is increased by 10%% forming a new rectangle. the area of the new rectangle formed is what percentage of the area of the original square?

math - Steve, Wednesday, October 19, 2011 at 10:09am
old area = s²

new area = (0.8s)(1.1s) = 0.88s², or 88% of old area

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