Video: Qhov ntim ntawm prism yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov mis rau lub ntim ntawm a prism yog V = Bh, qhov B yog qhov chaw hauv paus thiab h yog qhov siab. Lub hauv paus ntawm prism yog ib daim duab plaub. Qhov ntev ntawm daim duab plaub yog 9 cm thiab qhov dav yog 7 cm.
Ib yam li ntawd, qhov ntim ntawm txoj cai prism yog dab tsi?
Yuav nrhiav tau ntim ntawm a txoj cai prism , koj muab qhov ntev x dav x qhov siab, lossis nyob rau hauv rooj plaub ntawm a txoj cai triangular prism , koj pom thaj tsam ntawm lub hauv paus thiab muab qhov no los ntawm qhov ntev lossis qhov tob ntawm qhov prism.
Ib yam li ntawd, qhov ntim ntawm lub trapezium yog dab tsi? Formula rau Ntim ntawm Trapezoidal Prism. Yog hais tias lub prism ntev yog L, trapezoid puag dav B, trapezoid sab saum toj dav A, thiab trapezoid qhov siab H, ces ntim ntawm lub prism yog muab los ntawm plaub-variable formula: V(L, B, A, H) = LH(A + B)/2. Hauv lwm lo lus, muab sib xyaw ua ke qhov ntev, qhov siab, thiab qhov nruab nrab ntawm A thiab B.
Tom qab ntawd, ib tug kuj yuav nug, yuav ua li cas koj nrhiav tau lub ntim ntawm ib daim duab peb sab prism?
Yuav xam cov ntim ntawm ib daim duab peb sab prism , ntsuas qhov dav thiab qhov siab ntawm a daim duab peb sab puag, ces muab lub hauv paus los ntawm qhov siab los ntawm 1/2 mus rau txiav txim tus daim duab peb sab cheeb tsam. Tom ntej no, ntsuas qhov siab ntawm lub daim duab peb sab prism thiab muab qhov no los ntawm cov daim duab peb sab cheeb tsam kom tau qhov ntim.
Dab tsi yog qhov ntim ntawm daim duab peb sab prism tshuab xam zauv?
Hauv triangular prism tshuab xam zauv koj tuaj yeem nrhiav tau yooj yim ntim ntawm cov khoom ntawd. Ib tug general formula yog ntim = length * puag_area; ib qho parameter koj ib txwm yuav tsum tau muab yog qhov prism ntev, thiab muaj plaub txoj hauv kev los xam lub hauv paus - daim duab peb sab cheeb tsam.
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