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r³=3V : 4π
r³=3×972π : 4π
r³=729
r=³√729
r=9 cm
L=4πr²
L=4π9²
L=4π81
L=324π cm²
Gak ada dipilihan tapi jika pilihannya pakai cm² maka Jawaban nya C. 324 π cm²