Video: Yuav ua li cas koj pom thaj tsam ntawm oblique prism?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cavalieri lub hauv paus ntsiab lus hais tias, qhov ntim ntawm lub oblique prism zoo ib yam li txoj cai prism nrog sib npaug hauv paus thiab qhov siab. Cov thaj chaw saum npoo tuaj yeem xam raws li 2 * puag cheeb tsam + thaj chaw ntawm parallelograms. Sau lub kaum sab xis thiab sab ntev lossis qhov siab thiab lub hauv paus cheeb tsam los yog ntim.
Yog li ntawd, dab tsi yog cov qauv rau saum npoo ntawm prisms?
Tus general qauv rau tag nrho thaj chaw saum npoo ntawm ib txoj cai prism yog T. S. A. = ph + 2B qhov twg p nruab nrab ntawm lub hauv paus, h qhov siab ntawm qhov prism thiab B lub cheeb tsam ntawm lub hauv paus.
Ib yam li ntawd, tus qauv rau saum npoo ntawm lub voj voog yog dab tsi? Cov qauv rau cov thaj tsam ntawm ib lub voj voog yog A = π_r_2, qhov twg A cheeb tsam ntawm lub voj voog thiab r yog lub vojvoog ntawm lub lub voj voog.
Yog li ntawd, dab tsi yog tus qauv rau kev nrhiav qhov chaw ntawm daim duab peb sab prism?
Tom ntej no, muab lub hauv paus lub sij hawm qhov siab rau lub cheeb tsam ntawm daim duab peb sab (bh), thiab ntxiv lawv peb sab (s1 + s2 + s3). Tom qab ntawd, muab cov sum ntawm cov daim duab peb sab sab los ntawm qhov siab ntawm lub prism (H) thiab ntxiv cov txiaj ntsig ua ke rau cov lus teb, nco ntsoov suav nrog chav ntsuas tsim nyog.
Yuav ua li cas koj nrhiav tau qhov chaw ntawm ib tug kheej kheej?
Yuav nrhiav tau thaj chaw saum npoo ntawm a kheej kheej , siv qhov sib npaug 4πr2, qhov twg r stands rau lub vojvoog, uas koj yuav muab nws tus kheej rau square nws. Tom qab ntawd, muab cov squared radius los ntawm 4. Piv txwv li, yog tias lub vojvoog yog 5, nws yuav yog 25 x 4, uas sib npaug 100.
Pom zoo:
Yuav ua li cas koj pom thaj tsam ntawm daim duab hauv square units?
Thaj tsam yog ntsuas hauv 'square' units. Lub cheeb tsam ntawm daim duab yog tus naj npawb ntawm cov squares yuav tsum tau npog nws tag nrho, zoo li cov vuas rau hauv pem teb. Thaj tsam ntawm ib square = sab sij hawm sab. Txij li txhua sab ntawm ib lub square yog tib yam, nws tuaj yeem tsuas yog qhov ntev ntawm ib sab squared
Koj pom thaj tsam ntawm Monomial li cas?
Txhawm rau nrhiav thaj tsam ntawm lub xwmfab no, peb muab qhov ntev ntawm nws tus kheej, lossis square nws. Qhov chaw, 4x2, yog cov khoom ntawm tus lej (4) thiab qhov sib txawv nrog tus lej suav tag nrho (x2). Hauv lwm lo lus, nws yog monomial, ib yam nkaus. Yog li qhov tshwm sim ntawm kev sib faib ob monomial yog-lwm monomial
Yuav ua li cas koj pom thaj tsam ntawm lub pyramid siv lub vas?
VIDEO Hais txog qhov no, tag nrho thaj chaw ntawm lub pyramid yog dab tsi? Cov Qhov chaw ntawm lub Pyramid Thaum txhua sab ntsej muag zoo ib yam: [Paj Thaj chaw ] + 1 / 2 × Perimeter × [Slant Length] Ib tug kuj yuav nug, ua li cas koj nrhiav tau qhov chaw ntawm ib tug kheej kheej?
Yuav ua li cas koj pom lub hauv paus cheeb tsam ntawm daim duab peb sab prism?
Ib daim duab peb sab prism muaj peb lub duab plaub sab thiab ob lub ntsej muag daim duab peb sab. Txhawm rau nrhiav thaj tsam ntawm lub kaum sab xis, siv tus qauv A = lw, qhov twg A = thaj tsam, l = ntev, thiab h = qhov siab. Txhawm rau nrhiav thaj tsam ntawm daim duab peb sab, siv cov qauv A = 1/2bh, qhov twg A = thaj tsam, b = puag, thiab h = qhov siab
Koj pom thaj tsam ntawm lub ntsej muag siv lub ntsej muag li cas?
Qhov chaw saum npoo yog qhov sib npaug ntawm thaj chaw ntawm txhua lub ntsej muag (lossis qhov chaw) ntawm 3D duab. Ib lub cuboid muaj 6 lub ntsej muag. Txhawm rau nrhiav thaj chaw saum npoo ntawm lub cuboid, ntxiv cov cheeb tsam ntawm tag nrho 6 lub ntsej muag. Peb tseem tuaj yeem sau qhov ntev (l), dav (w), thiab qhov siab (h) ntawm lub prism thiab siv cov qauv, SA = 2lw + 2lh + 2hw, txhawm rau nrhiav thaj chaw saum npoo