The diagonal of a rectangle is 41 cm and its area is 20 sq. Cm. The perimeter of the rectangle must be: select one:
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given√l^2+√b^2=41
sobs
l^2+b^2=1681.given l × B is equals to 20 square centimetres .
l minus b is equals to root of a lsquare + b square - 4 LB .
so ,l+b= we are getting 9
now let us take 5,4 sum=9 ,product=20,diagonal square is 41,not diagonal.so question is wrong
sobs
l^2+b^2=1681.given l × B is equals to 20 square centimetres .
l minus b is equals to root of a lsquare + b square - 4 LB .
so ,l+b= we are getting 9
now let us take 5,4 sum=9 ,product=20,diagonal square is 41,not diagonal.so question is wrong
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