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

A storage tank consists of a circular cylinder with a hemisphere stuck on either end. If the external diameter of the cylinder be 1.4 m. and its length be 8 m. Find the cost of painting it on the outside at rate of Rs. 20 per m^(2) .

All oil drum is in the shape of a cylinder with two hemi-spheres stuck to each of its ends. The length of the drum is 5 m and the width is 1 m. Find its surface area.

If the surface area of a sphere is 154 cm^(2), find its radius.

Find the total surface area of a hemi-sphere of radius 2.8 cm.

If the surface area of a sphere is 154 cm ^(2) , find its radius

The total surface area of hemisphere is 462 cm^2 . Find its radius.

A wooden article was made by scooping out a hemisphere from each end of a solid cylinder, as shown in the figure. If the height of the cylinder is 10 cm and its base radius is 3.5 cm, find the total surface area of the article.

A solid is in the form of a right circular cylinder with a hemisphere at one end and a cone at the other end. The radius of the common base is 8 cm and the heights of the cylinderical and conical portions are 10 cm and 6 cm respectively. Find the total surface area of the solid. " " [Use pi=3.14 ]

The volume of a cylinder is 1540 cm^3 . Find its radius if its height is 10 cm .