Omtrek, oppervlakte en volume: Verskil tussen weergawes
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'''Oppervlak'''
:<math>\text{Oppervlak} = 4 \pi R^2</math>
'''Volume'''
:<math>\text{Volume} = \frac{4}{3} \pi R^3</math>
:<math>\text{Volume} = \frac{\pi}{3} h^2 \left( 3R-h \right)</math>
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