Question

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

Answer 1

length of the sheet = circumference of cylinder base
2*pi*r=44cm
2*22/7*r=44
r=(44*7)/(2*22)
r=7cm
therefore
cylinder radius=r=7cm
height of the cylinder=breadth of the rectangle
h=18cm
volume of the cylinder =pi*r^2*h
=22/7*7*7*18
=22*7*18
=2772cm^3

plz marks as brilliant

Answer 2

area of rectangle = csa of cylinder (height =breath of rectangle)
l*b=2πrh
44*18=2*22/7*18*r
792=44/7*18*r
792*7=44*18*r
5544=792*r
5544/792=r
7=r
thnx:)) hope it helps!!! :))