Indawo ye-cross-sectional yesilinda ingu ilingana nendawo yendilinga uma isikwe ngokuhambisana nesisekelo esiyindilinga. Indawo ephambanayo iyindawo yomumo onezinhlangothi ezimbili etholakala lapho into enezinhlangothi ezintathu - njengesilinda - isikwe nge-perpendicular kuya ku-eksisi ethile ecacisiwe endaweni ethile.
Ngokufanayo, Ithini ifomula yendawo ephambanayo? Indawo ye-cross-sectional inqunywa ngokusika irediyasi bese uphindaphinda ngo-3.14. Isibonelo, uma isihlahla silinganiswa njenge-10u201d DBH, irediyasi ingu-5u201d. Ukuphindaphinda ngo-5 ngo-5 kulingana no-25, okuthi uma iphindaphindwa ngo-3.14 ilingana no-78.5. Ngakho-ke, indawo ephambanayo yesihlahla esingu-10u201d DBH ingama-78.5.
Iyini ifomula yendawo? Uma kunikezwe unxande onobude l nobubanzi w, ifomula yendawo ithi: A = lw (unxande). Lokho wukuthi, indawo kanxande ubude buphindwe ngobubanzi. Njengecala elikhethekile, njengoba l = w esimweni sesikwele, indawo yesikwele enobude bohlangothi s inikezwa ngefomula: A = s2 (isikwele).
Uzixazulula kanjani izigaba eziphambene?
Okwesibili Uyisebenzisa kanjani ifomula yendawo?
Uyini umthamo wale silinda?
Ifomula yevolumu yesilinda ithi V = Bh noma V=πr2h . I-radius ye-cylinder ingama-8 cm ubude no-15 cm ubude. Faka u-8 esikhundleni sika-r futhi 15 esikhundleni sika-h kufomula ethi V=πr2h. Yenza kube lula.
bese Ithini ifomula yendawo kanye nesibonelo? Indawo Formula
Isibonelo, uma ufuna ukwazi indawo yebhokisi lesikwele elinezinhlangothi ezingama-40 cm, uzosebenzisa ifomula: Indawo yesikwele = a2, lapho u-a ewuhlangothi lwesikwele. Ngokufanayo, indawo kanxantathu ingatholakala kusetshenziswa ifomula yayo Yendawo (1/2 × b × h).
Uyibala kanjani ivolumu yezigaba ezahlukene? Ukubala umthamo we-cylinder ke, simane nje phindaphinda indawo ye-cross-section ngobude besilinda: V=A⋅h. Endabeni yesilinda esiyindilinga esingakwesokudla (ikani lesobho), lokhu kuba V=πr2h. Umfanekiso 1.1. 1: Ingxenye ngayinye ephambanayo yesilinda esithile iyafana nezinye.
Uyithola kanjani ivolumu yezigaba ezahlukene?
Ivolumu ngokwendlela ye-cross-section ithatha indawo yazo zonke izingcezu zomumo futhi izingeze ndawonye ukuze kutholwe isamba sevolumu. Kumajamo amabili, uma izingcezu ezihambisanayo zinendawo efanayo isamba sizofana futhi izimo zizoba nevolumu efanayo.
Iyini ingxenye yezibalo? I-cross-section yisigaba sendiza esi ingxenye yento enezinhlangothi ezintathu ehambisana nenye yezindiza zayo zokulinganisa noma i-perpendicular komunye wemigqa yayo yokulinganisa. Chaza amajamo akhiwe yizigaba ezihlukene (isikwele, unxande, unxantathu, njll).
Siyini isibonelo sendawo?
Iyini Indawo?
Igama lesimo: | Ifomula Yendawo: |
---|---|
triangle | Indawo = bh, lapho i-b isisekelo, Futhi i-h ukuphakama. |
Square | Indawo = l × l, lapho l ubude becala ngalinye. |
Unxantathu | Indawo = l × w, lapho l ubude futhi w ububanzi. |
I-parallelogram | Indawo = b × h, lapho i-b isisekelo, futhi i-h ukuphakama okubonakalayo. |
Liyini ikhambi lendawo? Indawo ikalwa ngamayunithi ayisikwele njengama-intshi ayisikwele, amafidi ayisikwele noma amamitha-skwele. Ukuze uthole indawo kanxande, phinda ubude ngobubanzi. Ifomula ithi: A = L *W lapho u-A eyindawo, L ubude, uW ububanzi, futhi * kusho ukuphindaphinda.
Ibalwa kanjani indawo yomhlaba?
ngamafuphi), nquma ubude nobubanzi bendawo osebenza nayo, elinganiswa ngezinyawo. Phindaphinda ubude ngobubanzi futhi uzoba nezinyawo eziyisikwele. Nansi ifomula eyisisekelo ongayilandela: Ubude (ezinyaweni) x ububanzi (ezinyaweni) = indawo ku-sq.
Ingakanani indawo yesilinda?
Umthamo wesilinda ngu-π r² h, kanti indawo yawo ingaphezulu 2π rh + 2π r².
Uyithola kanjani indawo yesilinda? Ifomula yokubala indawo ephelele yesilinda inikezwa njengokuthi, indawo yonke yesilinda. = 2πr(h + r), kuyilapho indawo engaphezulu egobile yefomula yesilinda ithi, indawo engaphezulu egobile/eceleni yesilinda = 2πrh, lapho u-'r' eyirediyasi yesisekelo futhi 'h' ingubude besilinda.
Kungani ifomula yevolumu yesilinda? Ngakho-ke, umthamo we-cylinder unganikezwa umkhiqizo wendawo yesisekelo nokuphakama. Kunoma iyiphi i-cylinder ene-base radius 'r', nobude 'h', ivolumu izoba izikhathi eziyisisekelo zobude. Ngakho-ke, umthamo we-cylinder = p2h amayunithi ama-cubic.
Ngibala kanjani indawo yombuthano?
Ifomula yendawo yendilinga ithi A = pi * r * r lapho r iyirediyasi (ububanzi / 2).
Uyithola kanjani indawo kwizibalo zebanga lesi-4?
Ingabe indawo ye-cross-sectional efanayo nevolumu?
Njengoba kunikezwe ukuqina okunganasizathu, singakwazi ukulinganisa ivolumu yakho ngokuyisika ibe izingcezu ezi-n ezizacile. Lapho izingcezu zincane, ucezu ngalunye lungalinganiswa kahle ngesilinda esivamile sokudla. Ngakho umthamo wocezu ngalunye cishe ucishe ube indawo yawo ephambanayo × ukujiya.
Yini ifomula yevolumu? Nakuba ifomula eyisisekelo yendawo yomumo ongunxande ingubude × ububanzi, ifomula eyisisekelo yevolumu ithi ubude x ububanzi × ukuphakama.
Uyini umdwebo ohlukanisayo?
Izingxenye eziphambanayo, noma izigaba, njengoba zivame ukubizwa kanjalo, zinjalo imidwebo yezakhiwo engama-orthographic projections wezakhiwo ezine-cut transecting them. Lolu hlobo lokuqagela lubonisa umdwebo onezinhlangothi ezintathu ekubukeni kwezinhlangothi ezimbili.
Iziphi izimo eziyiziqephu eziphambanayo zesilinda? Ingxenye yesiphambano yesilinda ngu indingilizi.
Kuyini ukuphindaphindeka kwendawo?
Ukuphindaphinda ngo-a Inombolo enamadijithi ayi-1 ngokusebenzisa amamodeli wendawo
Bonisa inkinga njengendawo yonxande, bese uhlephula lowonxande ube yizingxenyana ezincane ukuze uyixazulule kalula. Le ndlela yaziwa nangokuthi ibhokisi lokuphindaphinda.
Uyithola kanjani indawo enezinombolo ezi-3?