Question

A rectangular sheet of paper 44 cm*18 cm is rolled along its length and a cylinder is formed find the volume of the cylinder.

Answer 1

when rectangular sheet is rolled along it's length to form cylinder.
then length of rectangle become height of cylinder=44.
and circumference of circle of cylinder=18

$2\pi \times r = 18 \\ \pi \times r = 9 \\ r = 9 \times 7 \div 22 \\ r = 63 \div 22$
volume of cylinder
$\pi \times r^{2} \times h \\ 22 \div 7 \times 63 \times 63 \div 22 \div 22 \times 44 \\ 9 \times 2 \times 63 \\ 1134$
answer=1134cm^3