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904,32 = 4/3 × 3,14 × rpangkat3
r3 = 904,32 × 3/4 : 3,14
r3 = 216
r = 6 cm
nomor 2
L = 2×22/7×14 ( 14 + 15)
= 88 × 29
= 2552 cm2
v = 22/7 × 14 × 14 × 15
= 9240 cm3