Question

a rectangular piece of paper 22 cm *6 cm is folded without overlapping to make a cylinder of height 6cm. find the volume of the cylinder.

Answer 1

$22 \div 7 \times 11 \times 11 \times 6$

Answer 2

area of rectangle = 22×6 = 132 .
so , area of rectangle = area of cylinder
$132 = 2\pi \: rh \\ 132 = 2 \times 22 \div 7 \times r \times 6 \\ 132 = 6.28 \times 6 \times r \\22 = 6.28 \times r \\ r = 15.72$
we had find radius. so we can find volume also.
vol. of cylinder =πr2h