I-calculator yokubala iinkhala zokwenza i-arch
R1 - Umkhawulo wangaphakathi we-arch.
R2 - Umkhawulo wangaphandle we-arch.
S - Inani leengcenye ze-arch.
U - I-engele yesigaba sesiyingi.
Amakghono wehlelo.
Ukubalwa kwemilinganiso nenani leengcenye zokwenza i-arch yamapulangwe.