Tolong dong No 9 dan 10 makasih tolong jawab secepatnya ya...

10.
[tex] \frac{h}{100} = \frac{160}{200} \\ h = \frac{4}{5} \times 100 \\ h = 80[/tex]
9.
280 = 2x¾Llingkaran + L persegi
280 = 2x¾xπxr*2+r*2
[tex]280 = \frac{33}{7} {r}^{2} + {r}^{2} \\ 280 = \frac{40}{7} {r}^{2} \\ {r}^{2} = { \frac{280 \times 7}{40} } \\ {r}^{2} = 49[/tex]
L persegi = r*2 = 49