Cross-Sectional Area of a Rectangular Solid Lub ntim ntawm cov khoom duab plaub, suav nrog lub voos xwmfab, yogthaj tsam ntawm nws lub hauv paus (ntev ntev lub sijhawm dav) muab los ntawm nws qhov siab: V=l × w × h. Yog li ntawd, yog hais tias ib tug ntoo khaub lig seem yog parallel mus rau sab saum toj los yog hauv qab ntawm cov khoom, thaj tsam ntawm tus ntoo khaub lig-section yog l × w.
Cov piv txwv ntawm cheeb tsam hla ntu yog dab tsi?
Qhov chaw hla ntu yog thaj tsam ntawm ob sab duab uas tau txais thaum cov khoom peb-seem - xws li lub tog raj kheej - yog hlais ib qho perpendicular rau qee qhov axis ntawm qhov taw tes. … Piv txwv li, tus ntoo khaub lig-section ntawm ib lub tog raj kheej - thaum hlais thaum uas tig mus rau nws lub hauv paus - yog a voj voog.
Dab tsi yog qhov txawv ntawm cheeb tsam thiab cheeb tsam hla?
Thaj chaw yog me ntsis uas yog nyob ntawm ib qho khoom thaum nws so ntawm asurface i.e cheeb tsam yog qhov chaw uas siv los ntawm cov khoom. Whereas cross-sectional area is an cheeb tsam uas peb tau txais thaum tib yam khoom raug txiav ua ob daim.
Dab tsi yog qhov chaw seem formula?
Ntog cheeb tsam yog qhov suav ntawm thaj chaw ntawm txhua lub ntsej muag (lossis nto) ntawm 3D duab. … Peb tseem tuaj yeem sau qhov ntev (l), qhov dav (w), thiab qhov siab (h) ntawm prism thiab siv tus qauv, SA=2lw+2lh+2hw, txhawm rau nrhiav qhov thaj chaw saum npoo.
Dab tsi yog kev saib hla ntu?
: a saib lossis kos duab uas qhia tias sab hauv ntawm ib yam dab tsi zoo li tom qab txiav hla nws.: ib pab pawg me uas suav nrogpiv txwv ntawm ntau hom neeg los yog tej yam nyob rau hauv ib pawg loj. Saib tag nrho cov lus txhais rau ntu ntu hauv Lus Askiv Cov Neeg Kawm Lus Askiv. hla ntu.
