Answers

2015-02-15T00:01:47+05:30
H = 40 cm
when the sheet is rolled 22 cm becomes the circumference of the base circles.
circumference = 22 cm
2 π r = 22 cm
2×22/7×r = 22 cm
r = 22×1/2×7/22
r = 7/2
r = 3.5
Now we got the radius as 3.5 cm.
volume of  a cylinder = π r² h
                               = 22/7 × 3.5 × 3.5 × 40
                               = 1540 cm³
Therefore volume of the cylinder = 1540 cm³

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