The sides of a rectangule are 20 cm and 15 cm . If each side of the rectangle is increased 20% find the percentage increase in the area.
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Step-by-step explanation:
Original area:
A1 = 20(15) = 300cm2
New area:
A2 = (20*1.2)(15*1.2) = 432cm2
% increase = (432 - 300)/300 x 100%
% increase = 44%
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