mohon di bantu ya soal soal nya ....sebagai berikut ...untuk besok dikoreksi

1. B. OD

2. D. iv

3. -

4. r= 3a cm
L= phi×r^2
= phi × (3a)^2
= phi × 9a^2
= 9 phi a^2 (C)

5. r= 10 cm
d= 20 cm
K = phi × d
= 3,14 × 20 cm
62, 8 cm (C)

6. K = 88 cm
phi = 22/7

K= phi × d
88 = 22/7 × d
d = 88× 7/22
d = 28 cm (A)

7. r = 10,5
phi = 22/7
L = phi × r^2
= 22/7 × 10,5 ^2
= 346,5 cm^2 (B)

8. L = 154 cm^2
phi = 22/7

L = phi × r × r
154 = 22/7 × r^2
r^2 = 154 × 7/22
r^2 = 49
r = 7

d= 14 cm
K= 22/7 × 14 cm
K = 44 cm (D)

^maaf jika ada yang salah
semoga membantu