3. Jika diketahui diameter alas suatu tabung 70 cm dan tinggi 35 cm, tentukalah volume tabung tersebut?
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[tex] \tt V = \pi × r^2 × t \\ \\ \tt = \frac{22}{7} × 35 × 35 × 35 \\ \\ \tt = \frac{22}{\cancel{7}} × {\cancel{35}}^5 × 35 × 35 \\ \\ \tt = 22 × 5 × 35 × 35 \\ \\ \tt = 110 × 1.225 \\ \\ \tt = 134.750cm^3[/tex]
[tex]\Large\underline{\sf{Jawaban}}[/tex]
D = 70 Cm
r = 70 ÷ 2
= 35 Cm
Volume
[tex] = π \times {r}^{2} \times t \\ = \frac{22}{7} \times {35}^{2} \times 35 \\ = 3.850 \times 35 \\ = 134.750 \: {cm}^{3} [/tex]
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