Litaba
- U ka bala methareng ea lipalo tse fapaneng tsa jiometri joang?
- U ka tloha limithara tse lisekoere ho ea ho mehato e meng joang?
The mitha lisekoere ke karolo ea mantlha ea ho lekanya, e sebelisetsoa ho metha bokaholimo kapa lintho tse mahlakore a mabeli joalo ka lebota, folete kapa lemati.
Sekwere mitara ke sebaka se kahara sekwere seo mahlakore a sona e leng metha o le mong. Li hlahisoa ka letshwao "m²".
Metara ya sekwere e balwa ka ditsela tse fapaneng ho ya ka sebopeho sa sebaka seo o batlang ho se tseba: sekwere, kgutlotharo, sedikadikwe. Ho etsa sena, ho hlokahala hore u tsebe mokhoa oa lipalo oa ho bala limithara tse lisekoere bakeng sa palo e ngoe le e ngoe ea jiometri.
Ho fumana sebaka sa motho ea sa tloaelehang, palo e tlameha ho aroloa ka lipalo tse ling tse kang lisekoere kapa likhutlo-tharo. Ebe limithara tse lisekoere tsa lipalo tsena li baloa ka mekhoa e tsebahalang, ea eketsoa 'me palo e hlahisoang ke sebaka se felletseng ka lisekoere tsa palo e sa tloaelehang.
- E ka u sebeletsa: Liyuniti tsa tekanyo
U ka bala methareng ea lipalo tse fapaneng tsa jiometri joang?
- Bala limithara tse lisekoere tsa sekwere kapa khutlonne
Ho bala limithara tse lisekoere tsa, mohlala, lebota la lisekoere, bophahamo le bophara ba lerako li tlameha ho nkuoa ka tekanyo ea theipi. Ebe litekanyetso tse peli lia eketseha 'me ho fumanoa litholoana tsa lisekoere tsa sebaka seo.
- Bala limithara tse lisekoere tsa khutlo-tharo e nepahetseng
Ho bala limithara tse lisekoere tsa likhutlo tse tharo tse nepahetseng, o tlameha ho atisa tekanyo eo u nang le eona ebe o arola sephetho seo ka bobeli.
Mohlala: ho khutlo-tharo e setšoantšong: 5 x 7 = 35 metres e tla atisoa. Ebe o arola sephetho seo ka makhetlo a mabeli: 35/2 = 17.5 m².
- Bala limithara tse lisekoere tsa khutlonne e sa tloaelehang
Ho metha lisekoere tsa likhutloana tse sa tloaelehang, u tlameha ho fetolela likhutlo tse tharo tse sa tloaelehang ho li tloaela ebe u li metha.
Ho etsa sena, mohala o tlameha ho huloa ho tloha khoneng efe kapa efe ea khutlo-tharo ho ea lehlakoreng le leng ka tsela eo mohala o sehang lehlakore leo la triangolo ka sekhahla sa 90 °. Ebe e baloa ka tsela e ts'oanang le likhutlo tse tharo tse nepahetseng.
- Bala limithara tse lisekoere tsa selikalikoe
Ho bala limithara tse lisekoere tsa selikalikoe, selikalikoe se tlameha ho aroloa ka likarolo tse peli tse lekanang hantle. Ka mor'a moo, mohala o lokela ho huloa bohareng, o etse triangle e nepahetseng.
Pele o tlameha ho bala sebaka sa selikalikoe. Ho etsa sena, radius ea selikalikoe e lekantsoe le ho atisoa ka bobeli.
Mohlala: Haeba radius ena e lekana le lisenthimithara tse 3, re tlameha ho atisa 3 x 2 = 6. Sephetho sena ke bophara ba selikalikoe. Kamora nako, palo ena e tlameha ho eketsoa ka 3.14 (palo e tsejoang e le pi). Ho latela mohlala ona 6 x 3.14 = 18.84 cm².
U ka tloha limithara tse lisekoere ho ea ho mehato e meng joang?
- Fumana litekanyo ka maoto a maoto. Sena se sebelisetsoa ho fetolela li-unit tse ling ho li etsa square metres le ho li bala. Kahoo, leoto le le leng le lekana le lisekoere-mithara tse 0,093 (m²). Ebe o tlameha ho metha sebaka seo u batlang ho se bala ka teipi. Mohlala, bophara ba lerako. Ha re nka hore lebota lena le metha 2.35 m², boleng bona bo tlameha ho phetoa ka 0.093 mme sephetho se tla ba maoto a maoto.
- Fumana litekanyo lijareteng tsa lisekoere. Ho fumana sekala jareteng tse lisekoere, o tlameha ho eketsa boleng bo fumanoeng ka 0,84. Mohlala o boletsoeng ka holimo, atisa 2.35 x 0.84 'me sephetho se hlahisoa ka lijarete tse sekwere.
- Fumana litekanyo ka lihekthere. Ho etsa sena, sephetho se tlameha ho atisoa ka 4.05 mme sephetho se tla hlahisoa ka lihekthere.
- Tsoela pele ka: Li-unit tse nkiloeng
