1.

. If the lateral surface of a cylinder is 94.2 cm2 and its height is 5 cm, then find(i) radius of its base(ii) its volume. (Use Tt 3.14)

Answer»

Lateral Surface area of cylinder= 2*pi*r*h

1) 2*pi*r*h = 94.2 2*3.14*r*5 = 94.2 r = 94.2/31.4 r = 3 cm

2) Volume of cylinder = pi*r*r*h = 3.14*3*3*5 = 3.14*45 = 141.3 cm^3



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