Mugga of koorta

Qaybaha of koorta

Si loo ogaado xaddiga koorta, waxaa lagama maarmaan ah in la ogaado waxa uu yahay. hoose jirka joomateri iyo sare waa danab weyn ee tiradaasi joomatari.

Lines xira sare ee koorta oo la soohdintu waxay saldhigga, loo yaqaan matoorrada ah.

matoor The (tapered) ama dusha lateral of koorta oo ka dhigan ururka oo dhan matoorrada. tiradaasi Tall waa xariiq toosan xiriirisa sare iyo ka hoose ee koorta ee xagasha midig salka. line A oo isku xira sare iyo xarunta saldhigga, loo yaqaan dhidibka. Sidoo kale waa in aad ogtahay in xagal u dhexeeya labada qaybood horjeeda waxaa loo yaqaana xagal ee xalka.

noocyada

Waayo, qaababka sida koorta, mugga of Mathematics saaraa iyadoo la isticmaalayo qaaciidooyinka kala duwan ee kala duwanaan karaan ku xiran tahay nooca ay. Marka ay timaado in koorta ah, ugu qiyaasi goobaabin ee salka iyo Cardiff ba'an. Laakiin tani waa fikrad khaldan dadka illowdeen Dabcan manhajka. View koorta markii salkeeda foomamka goobada, loo yaqaan wareeg ah. Haddii, si kastaba ha ahaatee, salka koorta waa geesoolayaasha ah, ka dibna waxa ay noqon doontaa Ahraamta ah. Haddii salka waa ellipse, hyperbola ama parabola, tiradaasi sida loo yaqaan siday u kala horreeyaan elliptical, saxan iyo hyperbolic koorta. Labada kiis ee la soo dhaafay waxaa ka mid ah mugga aan la koobi karayn of koorta.

Noocyo ka mid ah qaabka joomateri loo qaybin karaa noocyada soo socda: koorta qaldan xaq iyo. Kiiska labaad u muuqataa in vertex la xarunta joomateri ee salka ku xiran yahay in line a dadab iyo in ay this saldhig, taas oo ah goobo ama (isle) si joogto ah geesoolayaasha ah. Tusaale ahaan, khadadka dadab isku xirta bartamaha goobada ama meel ka mid ah isgoyska of the diagonals of square ugu sareeya ka. Haddii kore waxaa la mowjadda ee la xiriirta xarunta symmetric ee salka tiradaasi joomateri, waxaa loogu tala galay sida scythe ah.

Intaas waxaa sii dheer, waxaa jira koorta ah la keenin wax (frustum) in, ku salaysan qeexidda dabcan dugsiga geometry ka, ma aha tirada gaar ah joomateri, laakiin waa qayb ka mid kaliya ee koorta oo dhan (Ahraamta). In si kale loo dhigo, diyaarad in la siman yahay diyaarada jeexan saldhig ka koorta koorta yar oo ka dhiman yahay koorta ah la keenin wax. Si kastaba ha ahaatee, qeexid kale oo manhajka arrin ka duwan fasiraya fikirka ah koorta ah la keenin wax sida qaab oo kala duwan joomateri (in ay dhacdo wareegtada): jirka obrazovanneo wareeg ku dhawaad koox trapezoid qaab, kuwaas oo foomamka trapezoid la xaglo saldhigyada.

mugga of koorta iyo koorta la keenin wax

saynisyahano Greek dheer ka hor soo jeeda qaaciidooyinka caawiya in si sax ah loo xisaabiyo mugga of koorta iyo qayb ka mid ah la keenin wax.

Si loo xisaabiyo mugga of koorta oo ah, waxaan u baahan nahay in lagu dhufto aagga saldhigga si height of koorta oo ah, ka dibna soo saarka keentay kala qaybiyey saddex. Qeybtu, taas oo aanu doonaa, oo waxay noqon doontaa meel ka mid ah koorta. Sida saxda ah caanaha la mid ah loo isticmaalo xisaabinta mugga Ahraamta ah, sida kiis gaar ah koorta. On warqad, formula waa sida soo socota: D = UCR / 3, meesha C - aagga saldhiga a, B - height.

Waayo, joomateri "koorta la keenin wax" qaab mugga waxaa loo xisaabiyaa by formula adag, taas oo, si kastaba ha ahaatee, sidoo kale waa wax adag iyo midda ma. wadarta Fatuuq ee saldhigyadii, afar gees, koobay leh wax soo saarka ee gacan salka. Tirada keentay tarmaan by a tirada π joogto ah (3,14) ka dibna by height waa tarmay. Natiijada qeybin ah by 3. formula ee xisaabinta mugga ka muuqan doontaa warqad sida soo socota: D = VHπH (R1HR1 + R1HR2 R2HR2 +) / 3. In caanaha, In - height of koorta la keenin wax, P1 - gacan saldhigga hoose, P2 - gacan ku saldhigga sare, π - tiro joogto ah (3,14).