A hollow cylindrical pipe open at two ends is made of iron and its thickness is 2 cm. If the external diameter of the pipe be 50 cm and length be 140 cm, how many cubic centimetres of iron does it contain ?

A cylindical tube opened at both the ends is made of iron sheet which is 2 cm thick. If the outer diameter is 16 cm and its length is 100 cm, find how many cubic centimetres of iron has been used in making the tube ?

A cylindical tube opened at both the ends is made of iron sheet which is 2 cm thick. If the outer diameter is 16 cm and its length is 100 cm, find how many cubic centimetres of iron has been used in making the tube ?

A cylindrical tube opened at both ends is made of iron sheet which is 2cm thick. If the outer diameter is 15 cm and its length is 100cm, find how many cubic centimeters of iron has been used in making the tube?

If the external diameter of a pipe is 25cm and the thickness is 1cm, find the total surface area.

Find the weight of a lead pipe 3.5m long,if the external diameter of the pipe is 2.4cm and the thickness of the lead is 2mm and 1 cubic cm of lead weighs 11gm.

Find the weight of a lead pipe 3.5m long,if the external diameter of the pipe is 2.4cm and the thickness of the leed is 2mm and 1 cubic cm of lead weighs 11gm.