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!!
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
1
Sowgandhiga Nair answered this
As we have root 29, the values are approximately correct