Question

A rectangular piece of paper is having measures 11 cm * 4 cm. It is folded without overlapping to make a cylinder of height 4 cm. Find the volume of the cylinder

Answer 1

As we fold the paper , the length became the base circumference of the cylinder.
Now circumference of the base of cylinder = 2πr= 11cm
2*22/7*r=11cm
r = 11*7/44=7/4
Now vol.of cylinder = πr^2h= 22/7*7/4*7/4*4
Vol. = 11/2 = 5.5cm cube

Answer 2

Answer:           38.5cm^3

Step-by-step explanation:

length of paper = circumference of cylinder formed

11 => 2\pi r

11 =>2*22/7*r

11*7/2*22=r

r=7/4

volume of cylinder=\pi r^2 h

=>22/7*7/4*7/4**4

=>77/2

=>38.5cm^3