Cov txheej txheem:

Muaj pes tsawg nets rau ib lub voj voog prism?
Muaj pes tsawg nets rau ib lub voj voog prism?

Video: Muaj pes tsawg nets rau ib lub voj voog prism?

Video: Muaj pes tsawg nets rau ib lub voj voog prism?
Video: Zoo Siab Nrog Koj - Paj Tsua Thoj [ Official MV ] Nkauj Tawm Tshiab 2022 2024, Kaum ib hlis
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A net yog 2-D qauv uas tuaj yeem muab tais rau hauv daim duab 3D. Hauv zaj lus qhia no, kev tsom mus rau nets rau duab plaub prisms . Nyob ntawd yog ntau ua tau nets rau tej yam muab prism . Piv txwv li, nyob ntawd yog 11 txawv nets rau ib lub voos xwmfab, raws li qhia hauv qab no.

Tsis tas li ntawd, lub net rau rectangular prism yog dab tsi?

Hauv zaj lus qhia no, peb siv nets ntawm ib daim duab khov kho kom pom thaj tsam ntawm ib daim duab khov kho. Cov net ntawm ib daim duab khoom yog tsim thaum lub cev muaj zog yog nthuav tawm raws nws cov npoo thiab nws lub ntsej muag tau muab tso rau hauv ib qho qauv hauv ob qhov ntev. Nets ntawm duab plaub prisms yog ua los ntawm cov duab plaub thiab squares.

Ib sab saum toj no, koj yuav ua li cas pom tag nrho thaj chaw saum npoo ntawm lub kaum sab xis prism? Cov qauv mus nrhiav tau thaj tsam ntawm ib daim duab plaub prism yog A = 2wl + 2lh + 2hw, qhov twg w yog qhov dav, l yog qhov ntev, thiab h yog qhov siab. Siv qhov no qauv , peb ntsaws rau hauv peb qhov tseem ceeb thiab ces ntsuas.

Hauv qhov no, cov duab dab tsi ua rau lub prism rectangular?

Ib daim duab plaub yog ib daim duab peb sab nrog rau lub duab plaub sab . Tag nrho nws cov ces kaum yog kaum sab xis. Nws tseem tuaj yeem hu ua a kub . A kub thiab a square prism yog ob qho tib si tshwj xeeb ntawm cov duab plaub.

Yuav ua li cas koj nrhiav tau tag nrho saum npoo ntawm ib tug kheej kheej?

Cov kauj ruam

  1. Paub qhov seem ntawm qhov sib npaug, Nto Area = 4πr2.
  2. Nrhiav lub vojvoog ntawm tus kheej.
  3. Square lub vojvoog los ntawm kev muab nws los ntawm nws tus kheej.
  4. Muab qhov tshwm sim no los ntawm 4.
  5. Muab cov txiaj ntsig los ntawm pi (π).
  6. Nco ntsoov ntxiv koj chav nyob rau cov lus teb kawg.
  7. Xyaum ua piv txwv.
  8. Nkag siab thaj chaw saum npoo.

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