Indlela yokuthola indawo isikwele

Nge lo mqondo, ngoba le ndawo, kufanele babhekane nazo nsuku zonke ezimpilweni zabo. Ngokwesibonelo, lapho indlu kubalulekile ukwazi ukuze ukubala inani impahla edingekayo. engadini usayizi icebo uzophinde lungachazwa yini endaweni. Ngisho elungisa indlu ngeke kwenziwe ngaphandle le ncazelo. Ngakho-ke umbuzo kanjani ukuthola indawo isikwele, ku yethu indlela yokuphila kuphakama ngokuvamile kakhulu futhi kubaluleke kabi, hhayi nje ngobe kutawutfutfukisa abafundi.

Kulabo abazi, isikwele - sibalo indiza izinhlangothi kabani okuphambene bayalingana futhi engele yilezi 90 °. Ukuze uqoke izindawo izibalo usebenzisa incwadi IsiZulu S. It is kulinganiswa amayunithi sikwele: amamitha, amasentimitha, nokunye.

Manje sizozama ukunikeza impendulo eningiliziwe yombuzo kanjani ukuthola indawo isikwele. Kunezindlela eziningana ukucacisa lokhu ubuningi. Ngokuvamile sibhekene indlela yokunquma endaweni usebenzisa ububanzi nobude.

Thatha isikwele nge ububanzi b kanye nobude k. Ukuze abale endaweni ububanzi isikwele kufuneka iphindaphindwe ubude. Lokhu konke kungenziwa imelelwa ifomula, okwakuyoholela libukeke kanje: S = b * k.

Manje cabangela leli indlela ku isibonelo ukhonkolo. Kuyadingeka ukucacisa ingadi icebo endaweni nge ububanzi 2 metres uphinde uthele kancane 7 budze.

S = 2 * 7 = 14 m2

Esifundweni sezibalo, ikakhulukazi esikoleni esiphakeme, kubalulekile ukucacisa endaweni ngezinye izindlela, njengoba ezimweni eziningi, futhi ubude noma ububanzi isikwele asiyazi. Nokho, kukhona nezinye izinto eziguquguqukayo owaziwa. Indlela yokuthola indawo isikwele kulesi simo?

• Uma siyazi ubude idayagonali futhi omunye emakhoneni akha a idayagonali kusuka kunoma iyiphi ohlangothini isikwele, kulesi simo, kudingeka sikhumbule mayelana endaweni unxantathu kwesokudla. Ngempela, uma ubheka, isikwele sakhiwa onxantathu amabili alinganayo-angled. Ngakho emuva ukubaluleka echaziwe. Okokuqala, kudingeka sithole cosine ye-engeli. Inani okuholela iyanda yi ubude idayagonali. Ngenxa yalokho, sithola ubude uhlangothi we isikwele. Ngokufanayo, kodwa kusetshenziswa definition sine, singakwazi ukuthola ubude ehlangothini lwesibili. Futhi indlela ukuthola indawo isikwele manje? Kulula kabi, uphindaphinde namagugu etholwe.

Ngo ifomula kwakuyoba libukeke kanje:

S = cos (a) yesono (a) * D2, lapho idayagonali obuphelele d-

• Enye indlela ukucacisa indawo isikwele - kumbuthano alotshiwe ke. Lusebenza uma isikwele isikwele. Ukuze usebenzise le ndlela kubalulekile ukwazi engaba umbuthano. Kanjani ukubala indawo isikwele ngendlela? Yiqiniso, ngokuvumelana ifomula. Ukuze afakazele lokho, ngeke senze njalo. Futhi kubonakala sengathi: S = 4 * R2, ukuphi iyona engaba.

Kwenzeka ukuthi siyazi engaba esikhundleni ububanzi we umbuthano olotshiwe. Khona-ke ifomula zaziyoba ibukeke lokhu:

S = D2, lapho d - ubukhulu.

• Uma wazi omunye izinhlangothi nobukhulu, kungenzeka kanjani-ke ukuthola indawo isikwele kulesi simo? Ukuze wenze lokhu, kumele wenze inombolo izibalo ezilula. Njengoba sazi, ezinhlangothini okuphambene isikwele bayalingana, ngakho ukubaluleka azungezwe isidingo ukuthatha obuphelele ezithile iphindwe kabili. Umphumela etholwe lihlukaniswe by ezimbili futhi ukuthola ubude ehlangothini lwesibili. Oh, bese indlela ejwayelekile, bande zombili futhi uthole indawo isikwele. Ngo ifomula kwakuyoba libukeke kanje:

S = b * (P - 2 * b), lapho b - side ubude, P - ipherimitha.

Njengoba ubona indawo elingunxande kungachazwa ngezindlela ezihlukahlukene. Konke kuncike onjani amagugu zaziwa kithi phambi kokucubungula udaba. Yiqiniso, izindlela zakamuva sibalo empilweni cishe ziphinde zenzeke, kodwa kungaba wusizo for imisebenzi eminingi esikoleni. Okungenzeka futhi ukuhlangabezana nezidingo zakho, kulesi sihloko kuyoba usizo.