Cov txheej txheem:

Koj pom qhov ntim li cas hauv qib 7th?
Koj pom qhov ntim li cas hauv qib 7th?

Video: Koj pom qhov ntim li cas hauv qib 7th?

Video: Koj pom qhov ntim li cas hauv qib 7th?
Video: Vajtswv Thaum Twg Koj Mam Los-NKAUJ NTSEEG TAWM TSHIAB (VamNeebLauj NpawgLem) Original MV by Chichia 2024, Kaum ib hlis
Anonim

Ntim yog qhia raws li cubic units. Ntim uas feem ntau kawm hauv qib 7 yog: Lub voos xwmfab Muab qhov ntev ntawm ib sab ntawm nws tus kheej peb zaug; cov formula yog A = l^3. Rectangular prism Muab qhov ntev ntawm peb sab (ntev, dav thiab qhov siab) nrog ib leeg: A = lwh.

Kuj nug, koj yuav daws li cas rau ntim?

Chav ntsuas ntsuas

  1. Volume = ntev x dav x qhov siab.
  2. Koj tsuas yog yuav tsum paub ib sab kom paub qhov ntim ntawm lub voos xwmfab.
  3. Cov ntsuas ntsuas rau ntim yog cubic units.
  4. Volume yog nyob rau hauv peb-dimensions.
  5. Koj tuaj yeem muab cov sab hauv txhua qhov kev txiav txim.
  6. Sab twg koj hu ntev, dav, lossis qhov siab tsis muaj teeb meem.

tus qauv rau ib lub voos xwmfab yog dab tsi? Ntim of a cube = side times side times side. Txij li txhua sab ntawm ib lub square yog tib yam, nws tsuas yog qhov ntev ntawm ib sab cubed. Yog hais tias lub square muaj ib sab ntawm 4 ntiv tes, lub ntim yuav yog 4 ntiv tes x 4 ntiv tes x 4 ntiv tes, lossis 64 cubic inches.

Ntawm no, qhov ntim txhais li cas hauv lej?

Hauv lej , ntim tuaj yeem txhais tau tias yog qhov chaw 3-dimensional los ntawm ib thaj tsam lossis nyob ntawm ib qho khoom. Ntawm no, piv txwv li, lub ntim ntawm lub cuboid los yog duab plaub prism, nrog rau chav tsev cubes tau txiav txim nyob rau hauv cubic units.

Tus qauv rau cheeb tsam yog dab tsi?

Qhov yooj yim tshaj plaws cheeb tsam formula yog cov qauv rau cov cheeb tsam ntawm ib daim duab plaub. Muab ib daim duab plaub nrog ntev l thiab dav w, lub qauv rau cov cheeb tsam is: A = lw (rectangle). Ntawd yog, lub cheeb tsam ntawm daim duab plaub yog qhov ntev multiplied los ntawm qhov dav.

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