The radius of the base of a cylindrical oil is 4 metre find its hieght if it can contains 1408 kiloliters oil
A cylindrical jar of radius 12 cm contains oil. Iron spheres each of radius 3 cm are immersed in the oil. How many such spheres are needed to raise the oil by 4 cm?
A wooden cylindrical pole is 7 m high and its base radius is 10 cm. Find its weight if the wood weighs 225 kg per cubic metre.