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Question

Choose the correct formula for surface area of a cylinder.
  1. 2πr2+2πrh
  2. πr2+πrh
  3. 2πr+2πrh
  4. 2πr2+πrh

A
2πr2+πrh
B
2πr2+2πrh
C
2πr+2πrh
D
πr2+πrh
Solution
Verified by Toppr

A cylinder comprises two circles and one rectangle as given in the figure
The surface area of a circle is πr2 where r is the radius and the surface area of a rectangle is 2πrh.
Surface area of cylinder =2× area of the circular base + area of the rectangle
Surface area of cylinder =2πr2+2πrh

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