Ma kēia paʻi ʻana, e noʻonoʻo mākou pehea e ʻike ai i ka radius o kahi pōʻai i hoʻopuni ʻia e pili ana i kahi cone, a me kona ʻili a me ka nui o ka pōʻai i hoʻopaʻa ʻia e kēia pōʻai.
Ke ʻimi nei i ka radius o kahi pōʻai
Hiki ke wehewehe ʻia kekahi. I nā huaʻōlelo ʻē aʻe, hiki ke kākau ʻia kahi cone ma nā ʻāpana āpau.
No ka 'ike 'ana i ka radius o ka poepoe (poepoe) i hoopuniia e pili ana i ka cone, e kaha kakou i ka mahele axial o ka cone. ʻO ka hopena, loaʻa iā mākou kahi triangle isosceles (i kā mākou hihia - ABC), kahi pōʻai me ka radius r.
radius kumu cone (R) like me ka hapalua o ke kumu o ka huinakolu (BC), a me nā mea hana (l) - kona mau ʻaoʻao (AB и BC).
ʻUmi o kahi pōʻai (r)puni i ka huinakolu ABC, ma waena o nā mea ʻē aʻe, ʻo ia ka radius o ka poepoe i hoʻopuni ʻia e pili ana i ka cone. Loaʻa iā ia e like me kēia mau ʻano:
1. Ma o ka generatrix a me ka radius o ke kumu o ka cone:
2. Ma o ke kiekie a me ka radius o ke kumu o ka cone
kiʻekiʻe (h) ʻo kahi cone he ʻāpana BE ma nā kiʻi ma luna.
Nā ʻōkuhi no ka ʻāpana a me ka nui o ka pōʻai/pōpoe
ʻIke i ka radius (r) hiki iā ʻoe ke ʻike i ka ʻili (S) poepoe a me ka leo (V) pōʻai i kaupalena ʻia e kēia pōʻai:
'Ōlelo Aʻo: π ua like ia me 3,14.