Question
Sun December 02, 2012 By:
 

What change in percentage is made in the area of rectangle by decreasing its length and increasing its breadth by 5%

Expert Reply
Mon December 03, 2012
let lenth is L and breath is B.
area =LB
 
now length =.95L
breath=1.05 B
therfor area=0.95*1.05LB=.9975LB
therfor change in area=0.0025 LB decrease
percentage change=(0.0025LB/LB)*100=0.25% decrease
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