the sides of a rectangular are 20 cm and 15 cm. if each side of the rectangular is increased by 20%, find the percentage increase in the area
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Answer:
Step-by-step explanation:
Initial Area = 20 x 15
= 300cm^2
After increasing sides,
l = 24cm , b = 18cm
Final Area = 24 x 18
= 432cm^2
Increase in area = 132cm^2
Percentage increase = Increase in area x 100/Initial area
= 13200/300
= 132/3
= 44%
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