if the length of a rectangle is increased by 4% and breadth of the rectangle is decreased by 5% find the percentage change in area
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Let the length = 100
breadth=100
Area = l×b
=100×100
=10000sq unit
after increasing and decreasing
length=100+4=104
breadth=100-5=95
area = l×b
=104×95
=9840 sq units
difference =10000-9840
=160
% = difference/original number × 100
=160/10000 × 100
=8/5%
hope it useful
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