Sand is pouring from a pipe at the rate of 12 cubic cm./sec. The falling sand forms a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. At which rate is the height of the sand-cone increasing when the height is 4 cm. ?

Sand is pouring from a pipe at the rate of 12 cubic cm./sec. The falling sand forming a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. At which rate is the height of the sand-cone increasing when the height is 4.5 cm. ?

Sand is pouring from a pipe at the rate of 1 2 cubic cm./sec. The falling sand forms a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. At what rate is the height of the sand-cone increasing when the height is 3.5 cm. ?

The volume of a cone is 18480cm^3 . If the height of the cone is 40 cm, find its radius of the base.

The height of a cone is 16 m and the radius of its base is 12 m. What is the area of its curved surface ?

The height of a cone is 21 cm. find the area of the base if the slant height is 28 cm.