A cylindrical pipe made of metal is 3cm thick.if the internal radius of the pipe is 10cm find the volume of the metal used in making 3cm in the pipe

Answer 1

To get the outer radius of the cylinder you add the thickness which is 3cm,calculate differently the volume of the outer cylinder and the inner one using the formula pi×r^2×h, using 3m=300cm as the height then,subtract the volume of the inner cylinder from the outer cylinder and get the final answer.