Question

the wall is 1m thich and the out side diameter is 100m and the height is 5m


what is the volume

Answer 1

\[V=4/3 \pi r^2h\]
First find the volume of the outside, then subtract the volume of the inside of the object to get the volume of the wall:
Volume of outside:
\[V=4/3\pi*(100/2)^2 * (5)\]
V=52360

Volume of inside:
\[V=4/3\pi*((100-2)/2)^2 * (5)\]
you subtract the 2 from 100 because the walls are 1m thick, so that would be 2m off of the diameter
V=50286

52360-50286=2074m^3
So final answer is V=2074m^3

Answer 2

the inside volume not the volume of the wall

Answer 3

I already told you the volume of the inside: it's 50286m^3