Question

Find the arra of the curved surface and the total sutface area of a right circular cylinder whose height and radius of the base are 20 cm and 14 cm respectively.

Answer 1

Radius of cylinder = 14 cm

Height of Cylinder = 20 cm

Curved Surface Area = 2'pi'rh

= (2 x 22/7 x 14 x 20) cm²

= 1760 cm²

Total Surface Area = 2'pi'r(h + r)

= {2 x 22/7 x 14(20 + 14)} cm²

= (2 x 22 x 2 x 34) cm²

= 2992 cm²

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