A cylinder is formed by folding a square of side 5 cm. Find its curved surface area and the volume.

Explanation

By folding the square in the shape of cylinder, height of cylinder h = 5 cm
and `2pi r=5`
`rArr r=(5)/(2pi)=(5xx7)/(2xx22)=(35)/(44)cm`
Now, curved surface area of cylinder = area of paper
`=5xx5=25 cm^(2)`
and volume `= pi r^(2)h`
`=(22)/(7)xx(35)/(44)xx(35)/(44)xx5`
`=(875)/(88) cm^(3)`