A frustum of a cone is such that one of its ends is hemispherical with a radius of 21cm and the other top end is...

A frustum of a cone is such that one of its ends is hemispherical with a radius of 21cm and the other top end is circular with a radius of 10.5cm .The perpendicular distance between the centres of the circular parts is 20cm. Find;
(a) The slant length of the original cone.
(b) The slant length of the frustum.
(c) The surface area of the frustum.

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sharon kalunda answered the question on August 20, 2019 at 13:26

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