please jawab besok di kumpul

[tex]volume \: kerucut = \frac{1}{3} \times 3.14 \times 15 \times 15 \times 42 = 9891[/tex]
[tex]s = \sqrt{ {15}^{2} + {42}^{2} } \\ s = \sqrt{225 + 1764} \\ s = \sqrt{1989} \\ s = 44.6 \\ lp = 3.14 \times 15 \times 15 + 3.14 \times 15 \times 44.6 = 706.5 + 2100.66 = 2807.16[/tex]

Maaf kalo salah, semoga membantu