Tolong dijawab nomor 16, 17, 18, 19, 20, pakai cara

16. B. Tembereng
17. D. Apotema
18. C. [tex]\pi {r}^{2} [/tex]
19. K = [tex]2\pi \: r[/tex]
= 2. [tex] \frac{22}{7} \times 7[/tex]
= 44 cm^2

20. K = 2[tex]2\pi \: r[/tex]
= [tex]2 \times 3.14.r \\ [/tex]
62.8 = 2. 3,14. r
62.8 = 6,28. r
r = 62.8 : 6,28
r = 10 cm


Maaf Kalo Salah Hehe