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A solid is in the shape of a frustum of a cone. The diameter of two circular ends are 60cm and 36cm and height is 9cm. find area of its whole surface and volume?

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Given height of a frustum cone = 9cm

Lower end radius (r1) = 60/2 = 30cm

Upper end radius (r2) = 36/2 = 18cm

Let slant height of frustum cone be l

Volume of frustum cone

Total surface area of frustum cone

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