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A frustum of a right circular cone has a diameter of base 20cm, of top 12cm and height 3cm.

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A frustum of a right circular cone has a diameter of base 20cm, of top 12cm and height 3cm. find the area of its whole surface and volume?

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Given base diameter of cone (d1) = 20cm

Radius (r1) = 20/2 = 10cm

Top diameter of cone (d) = 12cm

Radius (r2) = 12/2 = 6cm

Height of cone (h) = 3cm

Volume of frustum right circular cone

Total surface area of cone =  678.85cm2

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