Question

A rectangular sheet of paper 44 cm x 14 cm
is rolled along its length and a cylinder is
formed. Find the volume of the cylinder.​

Answer 1

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ANSWER :

Length of rectangular sheet = 44 cm

breadth of rectangular sheet = 14 cm

Now, it is rolled so length becomes circumference and breadth becomes height

Circumference of cylinder = 2πr

44 = 2×22÷7×r

44×7÷44 = r

7 = r

Radius of cylinder = 7 cm

height of cylinder = 14 cm

T.S.A of cylinder = 2πr(h+r)

= 2×22÷7(14+7)

= 44(21)

= 924cm square

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Answer 2

h=14

2*22/7*r=44

r=44*7/22*2

r=7

vol of cylinder =22/7*7*7*14

=2156

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