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- Pehea e helu ai i nā mika huinahalike o nā kiʻi geometric like ʻole?
- Pehea e hele ai mai nā mika mika i nā ana ʻē aʻe?
ʻO ka mika huinahalike ʻo ia ka wae kumu o ke ana ʻana, hoʻohana ʻia ia e ana i nā ʻāpana a i ʻole nā mea nui ʻelua e like me ka paia, kahi keʻena a i ʻole ka puka.
ʻO ka mika mika kahi ma loko o ka square kahi i ana kona ʻaoʻao i hoʻokahi mika. Hōʻike ʻia lākou me ka hōʻailona "m²".
Hoʻomaulia ʻia nā mika mika ma nā ʻano like ʻole e pili ana i ke ʻano o ka wahi āu e makemake ai e ʻike: square, triangle, pōʻai. E hana ai i kēia, pono e ʻike i ka hana makemakika no ka helu ʻana i nā mika mika no kēlā me kēia kiʻi geometric.
No ka ʻimi ʻana i ka ʻāpana o kahi kiʻi kūpono ʻole, pono e hoʻokaʻawale ʻia ke kiʻi i nā kiʻi ʻē aʻe e like me nā square a triangles paha. A laila helu ʻia nā mika huinahalike o kēia mau helu me nā formulate i ʻike ʻia, hoʻohui ʻia a ʻo ka hopena ka helu o ka nui i nā mika pāhaʻina o ke kiʻi kūlike ʻole.
- Hiki iā ia ke lawelawe iā ʻoe: Nā kikowaena o ke ana
Pehea e helu ai i nā mika huinahalike o nā kiʻi geometric like ʻole?
- E helu i nā mika pāhaʻahā o kahi huinahā like a huinahā paha paha
E hoʻomaulia i nā mika kuea o, no ka laʻana, he paia huinahā, ke kiʻekiʻe a me ka laulā o ka paia e pono ai e lawe me kahi ana leki. A laila hoʻonui ʻia nā waiwai ʻelua a loaʻa ka hopena o nā mika kūlike o kēlā ʻāpana.
- E helu i nā mika huinahā o ka huinakolu ʻākau
E hoʻomaulia i nā mika kuea o nā triangles kūpono, pono ʻoe e hoʻonui i ke ana āu i loaʻa ai a laila e hoʻokaʻawale i kēlā hopena i ʻelua.
ʻO kahi laʻana: i ka huinakolu i ke kiʻi: 5 x 7 = 35 mau mika e hoʻonui ʻia. A laila e hoʻokaʻawale i kēlā hopena i ʻelua: 35/2 = 17.5 m².
- E helu i nā mika huinahalike o ka huinahā kaulike
No ke ana ʻana i nā kiʻi huinahā like o nā huinahā kaulike ʻole, pono ʻoe e hoʻololi i nā triangles kaulike ʻole i nā mea maʻamau a laila ana iā lākou.
No ka hana ʻana i kēia, pono e huki i kahi laina mai kēlā me kēia kihi o ka triangle a i ka ʻaoʻao ʻē aʻe i mea e ʻoki ai ka laina i kēlā ʻaoʻao o ka triangle ma ka ʻaoʻao 90 °. A laila helu ʻia i ke ala like me nā triangles kūpono.
- E helu i nā mika pāhoʻonui lua o ka pōʻai
E hoʻomaulia i nā mika huinahalike o ka pōʻai, pono e hoʻokaʻawale ʻia ka pōʻai i ʻelua kūlike like. A laila, pono e huki i kahi laina i lalo i ka waena, e hana ana i kahi triangle kūpono.
Pono ʻoe e helu mua i ka ʻāpana o ka pōʻai. E hana ai i kēia, ana ʻia ka leho o ka pōʻai a hoʻonui ʻia i ʻelua.
ʻO kahi laʻana: Inā like kēia radius me 3 kenimika, pono mākou e hoʻonui i 3 x 2 = 6. ʻO kēia hopena ke anawaena o ka pōʻai. ʻO ka hope, pono e hoʻonui ʻia kēia helu e 3.14 (kahi helu i ʻike ʻia ʻo pi). Ke hāhai nei i kēia laʻana 6 x 3.14 = 18.84 cm².
Pehea e hele ai mai nā mika mika i nā ana ʻē aʻe?
- E kiʻi i ke ana i nā kapuaʻi kūwae. Hoʻohana ʻia kēia e hoʻololi i nā anakuhi ʻē aʻe i nā mika mika a helu iā lākou. No laila, hoʻokahi kapuaʻi e like me 0.093 mau mika kūlike (m²). A laila, pono ʻoe e ana i kahi āu e makemake ai e helu me kahi ana o ka lepe. ʻO kahi laʻana, ka laula o kahi pā. Ke kuhi nei he 2,35 m² kēia paia, pono e hoʻonui ʻia kēia waiwai e 0.093 a ʻo ka hopena ma nā kapuaʻi kuea.
- E kiʻi i ke ana ma nā pā pāhaʻaha. No ka loaʻa ʻana o kahi ana i nā pā pāhaʻaha, pono ʻoe e hoʻonui i ka waiwai i loaʻa iā 0.84. I ka laʻana i hōʻike ʻia ma luna, e hoʻonui i ka 2.35 x 0.84 a hōʻike ʻia ka hopena i nā pā pāha.
- E kiʻi i ke ana i ʻeka. E hana ai i kēia, pono e hoʻonui ʻia ka hopena e 4.05 a e hōʻike ʻia ka hopena ma eka.
- E hoʻomau me: Nā hua i loaʻa
