Question

The total surface area of frustum of a cone is​

Answer 1

The total surface area of frustum is given by;

Surface area = π * [ r2 + r'2 + (r + r') x √((r – r')2 + h2)

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Answer 2

Volume of frustum of cone, V = πh/3 [ (R3 - r3) / r ] (OR) πH/3 (R2 + Rr + r2). Total surface area of frustum of cone = πl [ (R2- r2) / r ] + π (R2 + r2) (OR) πL (R + r) + π (R2 + r2).

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