the side of a square are increased by 0.25 of their original length. what is the ratio of the new area to the old one
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Perimeter of Square = 4 x Length
Rate Of Change of 1 Side = 0.2 cm/s
Rate of Change of Perimeter = Sum of Rate of Change of all 4 sides = 4 x 0.2 cm/s
= 0.8 cm/s
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