Video: Dab tsi yog qhov kev sib raug zoo ntawm thaj chaw saum npoo thiab ntim ntawm ib lub sphere?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Rau ib kheej kheej , thaj chaw saum npoo yog S = 4 * Pi * R * R, qhov R yog lub vojvoog ntawm lub kheej kheej thiab Pi yog 3.1415 Tus ntim ntawm ib lub sphere V = 4 * Pi * R * R * R / 3. Yog li ntawd rau ib kheej kheej , qhov ratio thaj chaw saum npoo rau ntim yog muab los ntawm: S/V = 3/R.
Hauv qhov no, kev sib raug zoo ntawm thaj chaw saum npoo thiab ntim yog dab tsi?
Cov thaj chaw saum npoo rau ntim ratio ntawm ib yam khoom yog qhov kev sib raug zoo ntawm ob qhov ntsuas. Nws yog qhov ratio ntawm Deg cheeb tsam rau ntim . Nws qhia qhov sib piv nruab nrab qhov loj ntawm sab nraud ntawm ib yam khoom thiab tus nqi hauv. Cov khoom me me lossis nyias nyias muaj qhov loj thaj chaw saum npoo piv rau tus ntim.
Tom qab ntawd, lo lus nug yog, puas yog thaj tsam ntawm ib lub kheej kheej loj dua qhov ntim? Cov thaj chaw saum npoo yog ntau tshaj qhov ntim , thiab tsawg tshaj qhov ntim , tsuas yog nyob ntawm seb peb siv dab tsi.
Tsis tas li ntawd, koj yuav nrhiav tau qhov chaw saum npoo ntawm ib lub kheej kheej li cas?
Yuav nrhiav tau thaj tsam ntawm ib lub sphere , siv qhov sib npaug 4πr2, qhov twg r stands rau lub vojvoog, uas koj yuav muab nws tus kheej rau square nws. Tom qab ntawd, muab cov squared radius los ntawm 4. Piv txwv li, yog tias lub vojvoog yog 5, nws yuav yog 25 x 4, uas sib npaug 100.
Qhov txawv ntawm qhov chaw thiab ntim yog dab tsi?
Cov duab nrog tib yam cheeb tsam tuaj yeem muaj txawv thaj tsam; thiab cov duab nrog tib lub perimeter tuaj yeem muaj thaj chaw sib txawv . Dab tsi yog qhov qhov sib txawv ntawm qhov chaw thiab ntim ? Qhov chaw saum npoo yog qhov sum ntawm thaj chaw ntawm tag nrho cov ntsej muag ntawm lub cev muaj zog. Ntim yog tus naj npawb ntawm cubic units uas ua kom muaj ib daim duab.
Pom zoo:
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