the side of a rectangle are 20 cm and 15 cm. If each side of the rectangle is increased by 20%, find the percentage increase in the area
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Step-by-step explanation:
L=20cm
B=15cm
Area=L×B
=20×15cm
2
=300cm
2
Newlength=20+20%of20
=20+
100
20
×20
=24cm
Newbreadth=15+20%of15
=15+
100
20
×15
=18cm
NewArea=24×18cm
2
=432cm
2
%ofAreaIncreased=
300
(432−300)
×100%
=
3
132
=44
Ans.44%
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