The ratio of the radius and the slant height of a cone is 4:7 and the area of its curved surface is `792cm^2`.Find the radius of the cone.

The area of the curved surface of 24 cm.high cone is 550cm^2 .Find the volume of the cone.

The surface area of a sphere is 616cm^2 .Find its radius.

Find the height and volume of cylinder whose area of the curved surface is 4,400 cm^2 and perimeter of the base is 110 cm.

Find the area of a circle of radius 35 cm.

The area of the region between two concetric circles is 770cm^2 If the radius of the greater circle is 21 cm.Find the radius of the smaller circle.

The radius of a cylinder is 14cm and height is 20 cm. then- Find curved surface area.

The radius of two circles are in the ratio 3 : 4 and sum of their areas is equal to the area of a circle whose radius is 35 cm. Find the radius of these two circles.

The ratio of the radii of two cylinders is 2:3 and the ratio of their heights is 5:3.Find the ratios of their volumes and their curved surfaces.

A cylindrical tub of radius 5 cm and length 9.8 cm is full of water. A solid is in the form of a right circular cone mounted on a hemisphere is immersed into the tub. If the radius of the hemisphere is 3.5 cm and the height of the cone outside the hemisphere is 5 cm, find the volume of water left on the tub. (Use pi = 22/7 )

The radius of two circles are in the ratio 3 : 4 and sum of their areas is equal to the area of a circle whose radius is 35 cm. Find the ratio of the areas.