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
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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