The sides of a rectangle are 20cm and 15cm if each side of the rectangle is increased by 20% , find the percentage increase in the area .
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44%
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Answer of the question is :
As we know about Percentage...
So,
L = 20cm
B = 15cm
Area = L x B
= 20 x 15cm²
= 300cm²
New length = 20 + 20% of 20
= 20 + 20/100 x 20
= 24cm
New Breadth = 15 + 20% of 15
= 15 + 20/100 x 15
= 18cm
New Area = 24 x 18cm²
= 432cm²
% of Area Increased = ( 432 - 300 ) / 300x 100 = 132 / 3 = 44
Ans = 44%
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