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v=88×20=1.760
jadi jawabannya
A.1.760cm 3
jadiin yang terbaik ya
88 = 2 22/7 r
88 = 44r/7
2 = r / 7
r = 14 cm
V = r² t
= 22/7 14² 20
= 22 28 20
= 12.320 cm³