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

1 answer

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.