Hollow Cylinder Volume Calculator
Find the volume of a pipe / hollow cylinder.
A hollow cylinder (tube or pipe) has material between an outer and inner radius.
The math behind it
Subtract the inner cylinder from the outer one: V = πh(R² − r²).
Worked example
Outer 5, inner 3, height 10 → π·10·(25 − 9) ≈ 502.65.
FAQ
What if inner radius is 0?
It becomes a solid cylinder, V = πR²h.