Question

9. A cylinder has radius 4.2 cm and height 30 cm. Find the surface area of the cylinder, if it is
(1) Open at both ends
(ii) Closed at one end
(iii) Closed at both ends.​

Answer 1

Answer:

Answer. Answer is 792cm^2,if cylinder is open at both ends then we have to find lateral surface area by the formula 2πrh which is 2×(22/7)×4.2×30.

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