A hot water system (Geyser) consists of a cylindrical pipe of length 14 m and diameter 5 cm. Find the total radiating surface of hot water system.

An oil funnel of tin sheet consists of a cylindrical portion 10 cm long attached to a frustum of a cone. If the total height is 22 cm, the diameter of the cylindrical portion be 8 cm and the diameter of the top of the funnel be 18 cm, then find the area of the tin sheet required to make the funnel.

A funnel consists of a frustum of a cone attached to a cylinderical portion 12 cm long attached at the bottom . If the total height be 20 cm , diameter of the cylinderical portion be 12 cm and the diameter of the top of the funnel be 24 cm . Find the outer surface area of the funne.

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 cm and its length be 8 m. Find the cost of painting it on the outside at rite of Rs. 20per m^2 .

A solid is in the form of a right circular 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 cylindrical and conical portions are 10 cm and 6 cm respectivly. Find the total surface area of the solid [use pi=3.14 ]

A mansion has 12 right cylindrical pillars each having radius 50 cm and height 3.5m. Find the cost to painting the surface of the pillares at Rs 20 per square metre.

A cylindrical glass with diameter 20 cm has water to a height of 9 cm. A small cylindrical metal of radius 5 cm and height 4 cm is immersed it completely. Calculate the raise of the water in the glass ?

A tent is in the shape of a right circular cylinder surmounted by a cone. The total height and the diameter of the base are 13.5m and 28m. If the height of th cylindrical portion is 3m, Find the total surface area of the tent.