tolong dijawab beserta caranya ya pliss

[tex]volume \: tabung = \pi \times r \times r \times t \\ volume \: tabung = \frac{22}{7} \times 7 \times 7 \times 20 \\ volume \: tabung = 3080\\ volume \: kerucut = \frac{1}{3} \times \pi \times r \times r \times t \\ volume \: kerucut = \frac{1}{3} \times \frac{22}{7} \times 7 \times 7 \times 15 \\ volume \: kerucut = 770 \\ \\ volume \: gabungan = 3080 + 770 = 3850 {cm}^{3} \: (c)[/tex]

Maaf kalo salah, semoga membantu