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A rectangular piece of paper 11cm×4cm …

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A rectangular piece of paper 11cm×4cm is folded without overlapping to make a cylinder of height 4cm . Find the volume of cylinder

Posted by Purva Boharupi 5 years, 9 months ago

CBSE > Class 08 > Mathematics

1 answers

Yogita Ingle 5 years, 9 months ago

Length of rectangle paper =11cm
Breath of rectangle paper =4cm

So circumference of circular part of cylinder =2 pi r

So it is equal to length of paper (paper folded in shape of cylinder)

7=2 π r
r=7/2 π
R=1.11cm

Volume of cylinder = π r² h
H=4cm
R=1.11cm

Volume = 3.14x(1.11)²x4=15.48cm³

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