A Right Circular Cylinder with Radius of the Bae 7 cm and Height 20 cm :

The total surface area of a right circular cylinder with radius of the bae 7 cm and height 20 cm, is:

  1. 1188cm2
  2. 900cm2
  3. 140 cm2
  4. 1000cm2
Anurag Mishra Professor Asked on 17th November 2015 in Maths.
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1 Answer(s)

Answer: (1) 1188 cm square

Explanation:-
Formula-
The surface area of cylinder = 2 π r (r + h)

Given-
Radius of the cylinder = 7 cm and  height = 20 cm

Then, the surface area of cylinder = 2 x 22 x 7 x (7 + 20)/7
= 2 x 22 x 27
= 44 x 27
= 1188 cm square

Hence, the answer is (1) 1188 cm square.

Anurag Mishra Professor Answered on 18th November 2015.
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