The length of rectangle is increased by 20% and breadth is increased by 10%. Find the percentage
increased in its area?
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Answer:
The area of the rectangle has been increased by 121%.
Step-by-step explanation:
Let the length of the rectangle be x. And let the breadth be y. Also, let the area be a.
Area of a rectangle = l x b = xy
Increase in length = 20%
Increase in breadth = 10%
New area = (20%x + x)*(10%y + y)
= 120x/100 * 110y/100
= 12x*11y/100
= 121xy/100
= 121/100*xy
Hence, the area of the rectangle has increased by 121%.
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