What is the percentage increase in the area of a rectangle, if each of its sides is increased by 20% ?
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Answer:44 percentage
Step-by-step explanation:
Let original length = x metres and original breadth = y metres
Originalare=(xy)m2Newlength=(120100x)m=(65x)mNewbreadth=(120100y)m=(65y)mNewarea=(65x×65y)m2=(3625xy)m2Thedifferencebetweentheoriginalarea = xyandnewarea3625xyis=(3625)xy−xy=xy(3625−1)=xy(1125)or(1125)xy∴Increase%=(1125xy×1xy×100)%=44 percentage
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