tolomg bantu jawab, mau di kumpulkan secepat nya

no 21.
pertama cari r
[tex] {r}^{2} = {s}^{2} - {t }^{2} [/tex]
[tex] {r}^{2} = {25}^{2} - {24}^{2} [/tex]
[tex] {r}^{2} = 625 - 576 \\ {r }^{2} = 49 \\ r = \sqrt{49} \\ r = 7[/tex]
[tex] \frac{1}{3} \times \frac{22}{7} \times 7 \times 7 \times 24 \\ = \frac{1}{3} \times 22 \times 7 \times 24 = 1.232[/tex]