A rectangular sheet of paper 44cm by 20cm is rolled along its length to form a cylinder . Find TSA of cylinder .
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Length=44 cm=diameter
Breadth=20 cm= height
Radius= 44/2=22 cm
TSA of cylinder= 2πr(h+r)
=2*22/7*22(20+22)
= 40656/7=5808 cm^2
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ankitadevi119:
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but 44 is cicumference not diameter
So what is answer?
Circumference=44 cm =44=2πr. =r=44*7/2*22=14 cm
TSA= 2πr(h+r). =2*22/7*14(20+14). =2*22*2*34 = 2992cm^2
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