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Verified answer
R = 30 cmK = 88 cm
cari jari-jari
K = 2.π.r
88 = 2 x 22/7 x r
88 = 44/7 x r
r = 88 : 44/7
r = 88 x 7/44
r = 14 cm
Volume = 1/3.π.r².t
= 1/3 x 22/7 x 14 x 14 x 30
= 22 x 2 x 14 x 10
= 44 x 140
= 6.160 cm³