Khawufane ucinge ukuba itankana lifana nesoda.
Ukufumana indawo engaphezulu kuya kufuneka ubale: umphezulu kunye nomgangatho osezantsi kunye nomphezulu wento ejikelezayo.
Ifomula yasekhohlo: 2πrh ibala umzimba wesilinda.
Kulapho yonke into ejikelezayo yomzimba wesilinda 2πr iphindaphindwe ngobude besilinda h
Inxalenye esekunene yefomula: 2πr2 iindawo ezibaliweyo zedangqa eliphezulu nasezantsi. Le yindawo nje yesangqa 2πr esiphindaphindwe ngo-2
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