Ka paukūʻolokaʻa, paukūʻolokaʻa āpana

Paukūʻolokaʻa (loko mai o Helene, mai ka hua'ōlelo "wili", "wili") - he geometric kino i ua ho'ākāka 'ia ma ka waho ili i kapaia o paukūʻolokaʻa, a me na Kekoa elua. Mau Kekoa intersect i kaʻilikai ke kinona, a e laua i kekahi i kekahi.

A paukūʻolokaʻa ili - he ili i ua loaa translational ka noi o ka laina pololei i loko o ka lewa. Mau hana ka poe hana pela e ka mea koho wahi o ka pololei o ka laina i ana ma ka hālawa o ka palahalaha type. pololei kēia laina ua kapaʻia ka mīkini hana wāwahie, akā, he hālawa - ke alakaʻi.

Ka paukūʻolokaʻa ninoieo o ka paʻa o nā kumu, a me ka kīloi paʻewa paukūʻolokaʻa ili honua. Nā paukūʻolokaʻa e hele mai i loko o kekahi mau 'ano apau loa.

1. hoʻopoepoe, pololei paukūʻolokaʻa. Ma ke kumu o ka paukūʻolokaʻa a me p ÷ haku i ke alakaʻi laina generatrix, a mai ka iho (axis) o ka symmetry.

2. Kaʻiʻini paukūʻolokaʻa. ka makau ka mea, ma waena o ka hoʻomakaʻia laina, a me ka honua mea,ʻaʻole straightforward.

3. paukūʻolokaʻa kekahi palapala. Hyperbolic, elliptic, parabolic, a me na mea e ae.

Ka wahi o ka paukūʻolokaʻa, a me ka huina ili āpana o kēlā me kēia paukūʻolokaʻa ua loaʻa ma ka ohui i ka like o nā kumu o ka huahelu, a me kaʻaoʻao 'ilikai wahi.

Ka haʻilula e ho omaulia i ke ka iauae ieiuaae o ka paukūʻolokaʻa i ka hoʻopoepoe, pololei paukūʻolokaʻa:

SP = RH + 2n 2n 2n R2 = R (h + R).

Kīloi paʻewaʻilikai āpana ua imi mea iki oi huikau ma mua o ka holoʻokoʻa wahi o ka paukūʻolokaʻa, ka mea, he pōpilikia ma ka hoonui i ka lōʻihi o ka hoʻomakaʻia laina ma ke anapuni o ke kea pauku i hanaʻia ma kekahi pelane i mea p ÷ haku i ka generatrix laina.

Kēiaʻilikai wahi i ka hoʻopoepoe paukūʻolokaʻa, he pono paukūʻolokaʻa ike ma ka scan NineManga.com o ke kiʻi.

Scan NineManga.com - he rectangle i loaʻa i ke kiekie? H, a me ka lōʻihi P, a lākou, i ka waihona ipu anapuni.

Kēia hoʻohuʻu i ka paukūʻolokaʻa kīloi paʻewa wahi mea like me ka kaʻimiʻana wahi, a hiki e pōpilikia ma keia haʻilula:

Sb = pH.

Inā e lawe i ka hoʻopoepoe, pololei paukūʻolokaʻa, alaila, no ia:

P = 2n R, a me Sb = 2n RH.

Inā na kaʻaui paukūʻolokaʻa, i ka wahi o kaʻaoʻao 'ilikai e e like no ka huina hoonui o ka lōʻihi o kona mīkini hana wāwahie laina, a me ka kea pauku o ke anapuni a ka p ÷ haku i keia hoʻomakaʻia laina.

Eia naʻe,ʻaʻole hoʻi he mea haʻilula no ka hōʻike i ka wahi o ka kīloi paʻewa ili o ka makeʻe paukūʻolokaʻa ma kona kiekie a me na mea kiko'î o kona kumu.

No ka ho omaulia i ka wahi o ka paukūʻolokaʻa pauku, e pono i kekahi mau kūʻiʻo. Inā ke kea Pauku o kona pelane kumu nā keʻa, ke keʻa-pauku mea mau he rectangle. Akā, i kēia mau rectangles e e okoa, ke kaumaha ma muli o ka pauku kulana. Kekahiʻaoʻao o ka pauku iho o ka huahelu, i mea p ÷ haku i ke kumu like me ke kiʻekiʻe, a me ka mea 'ē aʻe - i ke anawaena o ka waihona ipu o ka paukūʻolokaʻa. A mahele 'āpana o ia, pakahi, lākou, i ka huina hoonui o kekahiʻaoʻao o ka rectangle a hiki i ka mea'ē aʻe, p ÷ haku i ka mea mua, a me ka huina hoonui o ka kiʻekiʻe o ka huahelu a hiki i ke anawaena o kona kumu.

Inā i ka laau kea maluna pauku mea p ÷ haku i ka waihona ipu huahelu, akā,ʻaʻole e hele ma ka kuapo iho (axis), i ka wahi o keia pauku, e like no ka huina hoonui o ka kiʻekiʻe o ka paukūʻolokaʻa, a me ka kekahi chord. E loaa i ka chord, ia mea pono e kükulu i kekahi kaiapili ma ka lalo o ka paukūʻolokaʻa kahahńnai e paʻa a hōʻoniʻoni ia aku, i mea he mahele nānaina. A mai keia wahi e pono i ka p ÷ haku i ka kahahńnai, mai ke kuʻina me ka p ÷ ai. mea e pili ana i ke kuʻina helu me ka waena. A kumu o ka triangle - o ka i koi ' chord, ka lōʻihi o ka i ua imi ma ka Pythagorean theorem. Ka Pythagorean theorem mea: "ka huina o na mika pāhoʻonui lua o na wawae elua, ua like ia i ka hypotenuse hana huinahā":

C2 = A2 + B2.

Inā ka pauku aʻole e pili mai ka kumu o ka paukūʻolokaʻa, a me ka paukūʻolokaʻa iho, a me ka hoʻopoepoe laina, ua loaʻa i ka wahi o keia pauku kea e like me ka wahi o ka p ÷ ai.

Ka wahi o ka p ÷ ai mea like i:

S env. 2n = R2.

No ka huli ana i ka ke kahahńnai o ka p ÷ ai R, ia mea pono e mahele i ka lōʻihi o ka C 2n:

R = C \ 2n, ma N - pi, ka makemakika ikaika pōpilikia noʻikepili a circumferentially like 3,14.