A hollow cylindrical iron pipe is of length 35 cm . It's outer and inner diameters are 10cm and 8cm respectively . Find the weight of the pipe if 1 cube centimeter of iron weights 7 gram

Answer 1

the volume of the metal is

π(5^2 - 4^2)(35) cm^3

Now you can find the weight.

Answer 2

6.93 kg