Rumus Volume Kerucut :
[tex]V = \frac{1}{3} \times {r}^{2} \times t[/tex]
Dijawab
A. r = 5 cm
t = 12 cm
[tex]V = \frac{1}{3} \times \pi \times {r}^{2} \times t[/tex]
[tex]V = \frac{1}{3} \times 3.14\times {5}^{2} \times 12[/tex]
[tex]V = 314 \: {cm}^{3} [/tex]
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C. r = 12 cm
t = 16 cm
[tex]V = \frac{1}{3} \times \pi \times {r}^{2} \times t[/tex]
[tex]V = \frac{1}{3} \times 3.14 \ \times {12}^{2} \times 16[/tex]
[tex]V = 2411.52 \: {cm}^{3} [/tex]
=================
E. t = 3 cm
sisi miring = 5 cm
[tex]r = \sqrt{ {5}^{2} - {3}^{2} } [/tex]
[tex]r = \sqrt{ 25 - 9 } [/tex]
[tex]r = \sqrt{ 16 } [/tex]
[tex]r = 4 \: cm[/tex]
maka :
[tex]V = \frac{1}{3} \times \pi \times {r}^{2} \times t[/tex]
[tex]V = \frac{1}{3} \times 3.14 \times {4}^{2} \times 3[/tex]
[tex]V = 50.42 \: {cm}^{3} [/tex]
