Usable volume of tank

This calculator find usable volume of tank, taking into account wall thickness

This simple calculator was created by user's request.
He asked for calculator which should find usable volume of tank, i.e. inner cylinder volume, taking into account wall thickness. Trivial.

PLANETCALC, Usable volume of tank

Usable volume of tank

Digits after the decimal point: 3
Usable volume (cubic meters)
Wall volume (cubic meters)
Total volume (cubic meters)