Arch benao lạgit̕ khali jaegako hisạb lạgit̕ kalkuleṭar
R1 - Arch reak̕ bhitri ḍạr.
R2 - Arch reak̕ bahre ḍạr.
S - Arch segment ko sankha.
U - Mit̕ṭen cirkil reak̕ mit̕ sec̕tar reak̕ angle.
Program reak̕ daṛe.
Kaṭ reaḱ ḍạr benao lạgit́ ḍạr ar ḍạr reaḱ hisạb.