A rectangular sheet of paper of dimensions 44 cm×14 cm is rolled along its length and a cylinder is formed. Find the surface area of the cylinder.
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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=14cm
volume of the cylinder =pi*r^2*h
=22/7*7*7*14
=22*7*14
=2156cm^3
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=14cm
volume of the cylinder =pi*r^2*h
=22/7*7*7*14
=22*7*14
=2156cm^3
khushimaratha1:
Height 14 cm h 18 cm nahi.
see the question properly first.
Thanks for correction
Is it now correct
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