The external and internal radii of a hollow cylinder are 5 cm and 4 cm respectively. If the height of cylinder is 14 cm, then find its internal volume and total surface area.

The internal and external radii of a hollow sphere are 3 cm and 5 cm respectively. The sphere is melted to form a solid cylinder of height 2 2/3cm . Find the diameter and the curved surface area of the cylinder.

The internal and external radii of a hollow sphere are 3 cm and 5 cm respectively. The sphere is melted to from a solid cylinder of height 2""2/3cm . Find the diameter and the curved surface area of the cylinder.

The area of base of a cylinder is 616 cm^(2) and height is 30 cm. Find its volume and total surface area.

The area of base of a cylinder is 616 cm^(2) and height is 30 cm. Find its volume and total surface area.

The external and internal radii of a hollow cylinder of height 11.5 cm are 5.3 cm and 3.8 cm respectively. It is melted and turned into a solid cylinder of height 7.3 cm . Find the radius of the latter in nearest milimetres.

The internal and external radii of a hollow sphere are 3 cm and 5 cm respectively. The sphere is melted to form a solid cylinder of height 2 frac(2)(3) cm . find the diameter and curved surface area of the cylinder.

The curved surface area of a cylinder is 88 cm^(2) . If the height of the cylinder is 4 cm, find its volume.

The volume and the height of a right cylinder are 70 cm^(3) and 14 cm respectively. Find the area of its base circle.