tolong dijawab !!!!!!!

8. 22/7 x 49 x 49 = 7546 cm

7. Juring Lingkaran

8.
K = 2πr
K = 2 × 22/7 × 49
K = 2 × 22 × 7
K = 44 × 7
K = 308 cm

Maaf Kalau Salah