Length and breadth of rectangle are incresed by 15%and 20%.what is the percentage increase in the area of the rectangle
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l*b=A
(l+0.15l)*(b+0.2b)=A
=1.15*1.2
=1.38
original area = 1
new area = 1.38
increase = 1.38-1
=0.38
Therefore % increase = 0.38*100
=38%
therefore your answer is 38%
(l+0.15l)*(b+0.2b)=A
=1.15*1.2
=1.38
original area = 1
new area = 1.38
increase = 1.38-1
=0.38
Therefore % increase = 0.38*100
=38%
therefore your answer is 38%
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