7. Tentukan volume bola dengan diameter 42 cm! ambar herhentuk setengah
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d = 42 cm
r = 1/2 × d
r = 1/2 × 42 cm
r = 21 cm
V (1/2 bola)
= 1/2 × 4/3 × phi × r^3
= 2/3 × phi × r^3
= 2/3 × 22/7 × 21 cm × 21 cm × 21 cm
= 19404 cm^3
[answer.2.content]
