Oblicz objętosć kuli, której pole powierzchni równe jest 25cm2.
Pole = 4πr²
4πr² = 25π |:4π
r² = 25/4
r = 5/2
Objętość = 4/3πr³
V = 4/3*π*(5/2)³ = 4/3*π*125/8 = 500/24π = 20 5/6π cm³
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Pole = 4πr²
4πr² = 25π |:4π
r² = 25/4
r = 5/2
Objętość = 4/3πr³
V = 4/3*π*(5/2)³ = 4/3*π*125/8 = 500/24π = 20 5/6π cm³