Kalkil volim materyel pou fabrikasion bann bag an beton
Silvouple indik dimansion an milimet
D - Diamet bag an beton
A - Epeser miray
H - Longer
Program-la finn desine pou kalkil bann materyo ek volim bann bag an beton.
Volim beton, volim intern ek diamet bag-la, dimansion ek siperfisi may ranforsman finn kalkile.
Bann bag an beton servi pou konstriksion bann pwi ek bann tenk septik.