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Volume = 462 cm³
Tinggi = 9 cm
π = 22/7
Ditanyakan = Jari-jari
Jawab =
Luas alas = Volume x 3/tinggi
Luas alas = 462 x 3/9
Luas alas = 154 cm²
r² = Luas alas : π
r² = 154 x 7/22
r² = 49
r = √49
r = 7 cm