cara nya gimana??????

a. luas 1 lingkaran = π.r^2
= 22/7 . 14. 14 = 616 cm
150°/360° = 5/12
= 5/12 × 616 = 256,66 cm

b. keliling lingkaran = π.d
= 22/7 × 28 = 88
150°/360° = 5/12
= 5/12 × 88 = 36,66 cm


semoga membantu ^^