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CBSE Class 9 Answered

What change in percentage is made in the area of rectangle by decreasing its length and increasing its breadth by 5%
Asked by | 02 Dec, 2012, 04:33: PM
answered-by-expert Expert Answer
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
Answered by | 03 Dec, 2012, 11:01: PM

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