The sides of a rectangle are 20 and 15 cm. If each side is increased by 20%,find the percentage increase in the area.
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see first find the area of rectangle of sides 20 and 15 cm and mark it as equation number 1. Now find the 20% of 20 and 15 and assuming that value as sides of rectangle and find the area. Now find the area increased by the new rectangle formed. Thank you
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