Find the perimeter of the rectangle whose length is 40 cm and a diagoonal is 41 cm
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41*41=40*40+x*x
x*x=41*41_40*40
=81
Therefore
x=root of 8=9cm
Perimeter =2*(9+40)=98cm
x*x=41*41_40*40
=81
Therefore
x=root of 8=9cm
Perimeter =2*(9+40)=98cm
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