Question

A rectangular sheet of paper is folded about its width 15cm if the length of the sheet is 22cm find volume of hollow cylinders thus formed

Answer 1

As mentioned in question that sheet is folded along width wise therfore height of cylinder is 15cm and circumference= 22cm

15cm = 22/7× 2 × r

15×7/22×2= radius

2.4cm= r

V= 22/7 × 2.4cm× 2.4 cm× 22cm

= 398.2cm^3

this is the answer

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