the diameter of the bottom of the frustum of right circular cone is 10cm and that of the top is 6cm and height is 5cm. find out the area of the total surface and volume of frustum .please fast!!

total surface =15 cm and volume of frustum=50cm
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This is the solution

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As diameter of bottom is 10 cm, radius will be 5 cm. Similarly, radius of top is 3 cm. (D=2r) Height =5 cm Slant height = root 29 TSa = pi x l (R+r) + pi (R^2+ r^2) =Substitute the values =242.25 Volume=pi x h/3 x( R^2 + r^2+ Rr) = 256.67
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As we have root 29, the values are approximately correct
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Wow Lily
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This one is wrong
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