2).Luas permukaan prisma∆
[tex](a \times t) + (a + t + m) \times tp) \\ (9 \times 12) + (9 + 12 + 15) \times 33) \\ 108 + (36 \times 33) \\ 108 + 1.188 \\ 1.296 \: {cm}^{2} \\ \\ volume \: prisma \: segitiga \\ \frac{1}{2} \times a \times t \: \times t \: prisma \\ \frac{1}{2} \times 9 \: cm \times 12 \: cm \times 33 \: cm \\ 1.782 \: {cm}^{3} \\ \\ \\ 3).luas \: permukaan \: tabung \\ \pi \times d(r + t) \\ 3,14 \times 10(5 + 20) \\ 31,4(25) \\ 785 \: {cm}^{2} \\ \\ volume \: tabung \\ \pi \times r \times r \times t \\ 3,14 \times 5 \: cm \times 5 \: cm \times 20 \: cm \\ 1.570 \: {cm}^{3} \\ \\ \\ 4).tinggi \: toples \: tabung \\ \frac{volume}{luas \: alas} = \frac{1.570 \: {cm}^{3} }{78,5 \: {cm}^{2} } \\ \\ 20 \: cm[/tex]
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2).Luas permukaan prisma∆
[tex](a \times t) + (a + t + m) \times tp) \\ (9 \times 12) + (9 + 12 + 15) \times 33) \\ 108 + (36 \times 33) \\ 108 + 1.188 \\ 1.296 \: {cm}^{2} \\ \\ volume \: prisma \: segitiga \\ \frac{1}{2} \times a \times t \: \times t \: prisma \\ \frac{1}{2} \times 9 \: cm \times 12 \: cm \times 33 \: cm \\ 1.782 \: {cm}^{3} \\ \\ \\ 3).luas \: permukaan \: tabung \\ \pi \times d(r + t) \\ 3,14 \times 10(5 + 20) \\ 31,4(25) \\ 785 \: {cm}^{2} \\ \\ volume \: tabung \\ \pi \times r \times r \times t \\ 3,14 \times 5 \: cm \times 5 \: cm \times 20 \: cm \\ 1.570 \: {cm}^{3} \\ \\ \\ 4).tinggi \: toples \: tabung \\ \frac{volume}{luas \: alas} = \frac{1.570 \: {cm}^{3} }{78,5 \: {cm}^{2} } \\ \\ 20 \: cm[/tex]