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jangan ngasal yg benar
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Penjelasan dengan langkah-langkah:
8. V: 3.140 cm^3
[tex]v = \pi \times r \times r \times t[/tex]
[tex]3140 = 3.14 \times 10 \times 10 \times t[/tex]
3140 = 314 × t
10 = t
9. V: 770 cm^3
T: 15 cm
[tex]v = \frac{1}{3} \times \pi \times r \times r \times t[/tex]
[tex]770 = \frac{1}{3} \times \frac{22}{7} \times r \times r \times 15[/tex]
[tex]770 \div \frac{22}{7} = \frac{1}{3} \times 15 \times {r}^{2} [/tex]
[tex]770 \times \frac{7}{22} = 5 \times {r}^{2} [/tex]
[tex]245 = 5 \times {r}^{2} [/tex]
[tex]49 = {r}^{2} [/tex]
r = 7
10. V: 12.320 m^3
T: 15m
[tex]12.320 = \frac{1}{3} \times \frac{22}{7} \times {r}^{2} \times 15[/tex]
[tex]12.320 = \frac{22}{21} \times {r}^{2} \times 15[/tex]
[tex]12.320 \times \frac{21}{22} \div 15 = {r}^{2} [/tex]
[tex]784 = {r}^{2} [/tex]
28 = r
Jadikan jawaban terbaik dan follow juga ya
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