Dab tsi yog qhov txhais ntawm hemisphere hauv lej?
Dab tsi yog qhov txhais ntawm hemisphere hauv lej?

Video: Dab tsi yog qhov txhais ntawm hemisphere hauv lej?

Video: Dab tsi yog qhov txhais ntawm hemisphere hauv lej?
Video: Vim li cas koj lub neej thiaj li tsis txawj muaj nyiaj yog ua cas? ( How to Change your life) 2024, Kaum ib hlis
Anonim

ntau nyob rau hauv geometry nws yog ib nrab ib nrab ntawm ib tug kheej kheej. Nws kuj hais txog ib nrab ntawm lub ntiaj teb, xws li "Northern Hemisphere " (uas ib feem ntawm lub ntiaj teb sab qaum teb ntawm txoj kab nruab nrab), los yog "Western Hemisphere " (ib nrab ntawm lub ntiaj teb sab hnub poob ntawm ib txoj kab khiav los ntawm North Ncej mus rau Askiv mus rau South Ncej, suav nrog Asmeskas)

Ib yam li ntawd ib tug yuav nug, dab tsi yog hemisphere piv txwv?

npe. Hemisphere txhais tau tias yog ib nrab ntawm lub ntiaj teb, lub ntiaj teb lossis lub hlwb. Ib piv txwv ntawm hemisphere yog sab qab teb ntawm lub ntiaj teb. Ib piv txwv ntawm hemisphere yog sab laug ntawm lub hlwb.

Tsis tas li ntawd, tus qauv rau hemisphere yog dab tsi? Rebekah, qhov siab ntawm hemisphere yog nws lub vojvoog. Cov ntim ntawm a kheej kheej yog 4/3 r3. Yog li cov ntim ntawm ib hemisphere yog ib nrab ntawm qhov ntawd: V = (2/3) π r3.

Tom qab ntawd, ib tug kuj yuav nug, TSA ntawm hemisphere yog dab tsi?

TSA of hemisphere yog ib nrab ntawm sphere ntxiv rau thaj tsam ntawm lub voj voog tsim rau saum. Vim li no, TSA of hemisphere yog 2r 2 + π r 2 = 3 np 2.

Dab tsi yog hemisphere 3d duab?

Cov Hemisphere Shape A hemisphere yog ib nrab ntawm ib tug kheej kheej thiab muaj: 1 ntug. (ib ncig ntug) 1 lub ntsej muag. Nws tsis muaj vertic.

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