Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Passage: Ko tetahi o nga takoha nui ake a Parameshvara ko tana tauira momo uara toharite mo te whakaurunga o te sine. Ko ia te kaikaikarau tuatahi ki te hoatu i te radius o te porohita me te tapawhā kua whakauruhia. I ētahi wā ka whakawhiwhia te kīanga ki a Lhuilier (1782), 350 tau i muri mai. Ki te taha o te tapawhā huringa ko te, b, c, me te d, te radius R o te porohita circumscribed ko:  Pātai: nā wai te radius i kitea?
Ko Lhuilier