A solid is composed of a cylinder with hemisphere ends. If the whole length of the solid is 104 cm and the radius of each of its hemisphere end is 7 cm, find the cost of polishing its surface at the rate of ₹ 10 per `dm^2`

A wooden article was made by scooping out a hemisphere from each end of a solid cylinder. If the height of the cylinder is 20 cm and radius of the base is 3.5 cm, find the total surface area of the article.

Choose the correct-one. The total surface area of a solid hemisphere of radius 7 cm is

A medicine capsule is in the shape of a cylinder with two hemispheres stuck to each of its ends(see Fig.13.10).The length of the entire capsules is 14mm and the diameter of the capsule is 5 mm.Find its surface area.

A round table cover has six equal designs as shown in the figure. If the radius of the cover is 28cm . Find the cost making the design at the rate of 3.50 per cm^2 .

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 )

A cylindrical tub of radius 5 cm and length 9.8 cm is full of water. A solid 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 height of the cone outside the hemisphere is 5 cm, find the volume of water left in the tub.

A solid is in the shape of a cone standing on a hemisphere with both their radii being equal to 1 cm and the height of the cone is equal to its radius.Find the volume of the solid tn terms of pi .

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.

A round table cover has six equal designs as shown in Fig.12.14. If the radius of the cover is 28 cm,find the cost of making the designs at the rate of Rs.0.35 percm^2 (use sqrt3=1.7)

A solid is in the form of a right-circular cone mounted on a hemisphere. The radius of the hemisphere is 2.1 cm and height of the cone is 2 cm. The solid is placed in a cylindrical tub full of water in such a way that the solid is fully submerged in water. If the radius of the cylinder is 5 cm and its height is 9.8 cm, find the volume of the water left in the tub..