Question

a hollow cylinder 15cm long is made up c of iron and its external diameter is 8cm the volume of iron used in making the pie is 330 cm cube what is the thickness of the pipe

Answer 1

Answer:

Step-by-step explanation:

VOLUME OF HOLLOW CYLINDER-22/7*(R)^2-(r)^2*H

330=22/7*{(8)^2-(8-r)^2}*15

330=22/7*64-(64+r^2-16r)*15