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P=24πcm²
24π = 4πr² /:π
24= 4r² /:4
r²=6
r=√6cm
V= 4/3πr³
V= 4/3 π ·(√6)³= 4/3 π ·6√6=8π√6
V= 8π√6cm³⇒ Odp. B