A rectangular piece of paper of width 30cm and length 70cm is rolled along its width , to form a cylinder . What is the volume of the cylinder so formed?
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volume of a cylinder=π×r squrae×h
d=30
r=30÷2=15
r=15
22/7×15×15×70=49,500
d=30
r=30÷2=15
r=15
22/7×15×15×70=49,500
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