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⋆⭒⋆⭒⋆⭒⋆⭒⋆⭒⋆⭒⋆⭒⋆⭒⋆⭒⋆⭒⋆
⋆ Math ⋆ ࣪.· ᵎ
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Nomor 25
V = p × l × t
= 80 × 10 × 20
= 16.000 dm³ [Opsi A]
Nomor 26
r = 20/2 = 10 cm
V = V kubus + V tabung
= s × s × s + π × r² × t
= 20 × 20 × 20 + 3,14 × 10² × 20
= 8.000 + 6.280
= 14.280 cm³ [Opsi C]
Nomor 27
r = 14/2 = 7 dm
V drum = ⅔ × π × r² × t
= ⅔ × 22/7 × 7 × 7 × 15
= 2 × 22 × 7 × 15
= 4.620/3
= 1.540 dm³ [Opsi A]