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1. b c d f
2. 2
3. Rumus kubus = S × 6
4 × 4 × 6 = 16 × 6 = 96 Cm²
7 × 7 × 6 = 49 × 6 = 294 Cm²
8 × 8 × 6 = 64 × 6 = 384 Cm²
10 × 10 × 6 = 100 × 6 = 600 Cm²
12 × 12 × 6 = 144 × 6 = 864 Cm²
15 × 15 × 6 = 225 × 6 = 1.350 Cm²
4. R² × 6 = 54
R² = 54 ÷ 6
R = √9
R = 3
5. Jumlah rusuk balok = 12
192 : 12 = 16
R² × 6 =
16² × 6 =
256 × 6 = 1536 Cm²
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