tolong bantu ya pakai proses yg benar aku jadiin jawaban terbaik

[tex]volume \: \frac{1}{2} \: bola = \frac{1}{2} \times \frac{4}{3} \times \frac{22}{7} \times 7 \times 7 \times 7 = 718.67\\ volume \: kerucut = \frac{1}{3} \times \frac{22}{7} \times 7 \times 7 \times 15 = 770 \\ volume = 770 + 718.67 = 1488.67 {cm}^{3} [/tex]

Maaf kalo salah, semoga membantu