The area of the base of a cone is 616 sq.cm.Then find the radius of the cone.

The surface area of a sphere is 616 sq.cm. then its radius is …… cm.

The radius of the base of a cone is 14 cm and its height is 24 cm. Find the volume

A toy is made in the form of hemisphere surmounted by a right cone whose circular base is joined with the plane surface of the hemisphere. The radius of the base of the cone is 7 cm. and its volume is 3/2 of the hemisphere. Calculate the height of the cone and the surface area of the toy correct to 2 places of decimal. ("Take "pi=3""1/7)

A right triangle with sides 3 cm, 4 cm and 5 cm is rotated the side of 3 cm to form a cone. Then find the volume of the cone.

The radius of the base of a cone is increasing at the rate of 3 cm/min and altitude is decreasing at the rate of 4 cm/min. The rate of change of lateral surface when the radius is 7 cm and altitude is 24 is

If the rate of change in the area of a circle is it pi sq. cm/sec, then find the rate of change in the radius of the circle when the radius is 10cm.