Tolong soal ini ya!! No 28.29 Pakai cara Terima kasihhh :)

maaf cuma bisa jawab nomor 29

28. V = (½ × a × t ) × t
= (½×20×24)×41
= 240×41
= 9.840 cm³
29.
[tex]v \: = \pi \times {r}^{2} \\ v = \frac{22}{7} \times 10.5 \times 10.5 \\ v = \frac{2425.5}{7} \\ v = 346.5[/tex]