Question

A hollow cylindrical pipe is 21cm long.The outer and inner diameters are 10 cm and 6 cm respectively.The volume of copper used in making the pipe​

Answer 1

Answer:

π (R²-r²) × h

22/7 × (10²-6²) × 21

22/7 × 64 × 21

= 4224

Answer 2

hey mate

here is your answer

Answer:

4222.300 cm

Step-by-step explanation:

volume of copper used = volume of outer cylinder - volume of inner cylinder

volume of cylinder = Πr^2h

volume of inner cylinder = 2375.044 cm

volume of outer cylinder = 6597.344 cm

hope it will help uhhh