Question

A hollow cylindrical copper pipe is 2.1m long. Its outer and inner diameters are 10cm and 6cm respectively. Find the volume of the copper used in making the pipe ​

Answer 1

Answer:

The answer is 422.4 $m^{2}$

Step-by-step explanation:

$\pi$$r^{2}$h - $\pi r^{2}$h

22/7 x 2.1 x (100 -36)

22 x 0.3 x 64

422.4