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4/3.3,14.10,5.10,5.10,5=461,58
d = 21 cm, maka r = d/2= 10,5 cm
π = 22/7
v = 4/3 x 22/7 x (10,5)³
= 4/3 x 22/7 x 1157,625
= 4851 cm³