7).Banyak kotak bisa masuk
[tex] \frac{v \: balok}{v \: kubus} = \frac{p \times l \times t}{r \times r \times r} \\ \\ \frac{30 \times 15 \times 12}{3 \times 3 \times 3} = \frac{10 \times 5 \times 4}{1 \times 1 \times 1} \\ \\ 200 \: buah \\ \\ \\ 8).luas \: permukaan \: tabung \\ \pi \times d(r + t) \\ 3,14 \times 10(5 + 25) \\ 31,4(30) \\ 942 \: {cm}^{2} [/tex]
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7).Banyak kotak bisa masuk
[tex] \frac{v \: balok}{v \: kubus} = \frac{p \times l \times t}{r \times r \times r} \\ \\ \frac{30 \times 15 \times 12}{3 \times 3 \times 3} = \frac{10 \times 5 \times 4}{1 \times 1 \times 1} \\ \\ 200 \: buah \\ \\ \\ 8).luas \: permukaan \: tabung \\ \pi \times d(r + t) \\ 3,14 \times 10(5 + 25) \\ 31,4(30) \\ 942 \: {cm}^{2} [/tex]