Volume kerucut adalah 924 cm3 jika tinggi kerucut 18 cm maka luas alas kerucut adalah.....cm2

[tex]volume = \frac{1}{3} \times \pi \times {r}^{2} \times t \\ 924 = \frac{1}{3} \times \frac{22}{7} \times {r}^{2} \times 18 \\ 19404 = 1 \times 22 \times {r}^{2} \times 18 \\ 19404 = 396 \times {r}^{2} \\ 49 = {r}^{2} \\ r = 7cm[/tex]
[tex]luas \: alas = \pi \times {r}^{2} \\ = \frac{22}{7} \times 7 \times 7 \\ = 22 \times 7 = 154 {cm}^{2} [/tex]