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Q.

the length of the given rectangle is increased by 20% and breadth is decrease by 20% then the area


Class:                9


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a

Remain same

b

increase by 5%

c

decrease by 5%

d

decrease by 5% 

answer is D.

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Detailed Solution

let R is the original length and b is the original breadth A = lo
A’ = l’ × b’
Change
= –4%
Here the area decrease by 4%
option 4 is correct
  
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