Question

hollow cylindrical copper pipe is 210 cm long. Its outer and inner diameter are 10 cm and 6 cm respectively. Find the volume of the copper used in making the pipe

Answer 1

$\pi(10 - 6) {}^{2} \times 210$

Answer 2

Answer:

Step-by-step explanation:

= 22/7 *(5*5-3*3)*210

= 22/7 *(25-9)210

= 22/7*16*210

= 22*30*16               (210 is divisible by 7 we got 30)

= 10560 is our answer.