Math, asked by shivajikokane, 1 month ago

if the length of rectangle increased by 10% and breadth reduced by 10% then the area resulting rectangle – than the area of the original rectangle​

Answers

Answered by amitnrw
2

Given : length of rectangle increased by 10% and breadth reduced by 10%

To Find : area resulting rectangle compared to the area of the original rectangle​

Solution:

Let say original rectangle  = 10L  and 10B   units

area = 10L * 10B = 100LB sq units

length of rectangle increased by 10%  = 10L + (10/100)10L  = 11L

breadth of rectangle decreased by 10%  = 10B - (10/100)10B  =9B

Area of resulting rectangle = 11L * 9B  = 99LB sq units

Decrease in area = 100LB - 99LB =  LB

% Decrease in area = (LB/100LB) * 100 = 1 %

1 % decrease in area

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