Question

Tolong bantuannya Kak​

Answer 1

Jawaban:

12. a

K = 2 × π × r

K = 2 × 3,14 × 10

K = 62,8 cm

13. d

K = π × d

66 = 22/7 × d

d = 66 ÷ 22/7

d = 66 × 7/22

d = 21 cm

14. b ( 90° )

15. d

K = 2 × π × r

K = 2 × 22/7 × 35

K = 220 cm

16. b

K = 2 × π × r

K = 2 × 22/7 × 14

K = 88 cm

Panjang Lintasan adalah

15 × 88 cm = 1.320 cm = 13,2 m

17. c ( π × r × r )

18. a

L = ⅛ × π × r²

L = ⅛ × 22/7 × 14 × 14

L = 77 cm²