Jawaban:
[tex]1. \: luas \: permukaan \: kubus = 6 \times s \times s \\ 6 \times 7 \times 7 = 294 \: {cm}^{2} \\ 2. \: volume \: kubus = s \times s \times s \\ 5 \times 5 \times 5 = 125 \: {cm}^{3} \\ 3. \: luas \: permukaan \: balok = 2 \times (pl + pt + lt) \\ 2 \times (8 \times 5 + 8 \times 3 + 5 \times 3) \\ = 2 \times (40 + 24 + 15) \\ = 2 \times 79 = 158 \: {cm}^{2} \\ 4. \: tinggi \: balok = \frac{volume}{p \times l} \\ \frac{960}{12 \times 10} = \frac{960}{120} = 8 \: cm \\ 5. \: volume \: prisma \: segitiga = ( \frac{1}{2} \times a \times t) \times t \: prisma \\ ( \frac{1}{2} \times 10 \times 10) \times 15 \\ = 50 \times 15 = 750 \: {cm}^{3} [/tex]
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Jawaban:
[tex]1. \: luas \: permukaan \: kubus = 6 \times s \times s \\ 6 \times 7 \times 7 = 294 \: {cm}^{2} \\ 2. \: volume \: kubus = s \times s \times s \\ 5 \times 5 \times 5 = 125 \: {cm}^{3} \\ 3. \: luas \: permukaan \: balok = 2 \times (pl + pt + lt) \\ 2 \times (8 \times 5 + 8 \times 3 + 5 \times 3) \\ = 2 \times (40 + 24 + 15) \\ = 2 \times 79 = 158 \: {cm}^{2} \\ 4. \: tinggi \: balok = \frac{volume}{p \times l} \\ \frac{960}{12 \times 10} = \frac{960}{120} = 8 \: cm \\ 5. \: volume \: prisma \: segitiga = ( \frac{1}{2} \times a \times t) \times t \: prisma \\ ( \frac{1}{2} \times 10 \times 10) \times 15 \\ = 50 \times 15 = 750 \: {cm}^{3} [/tex]