tolong yang naik hati dari no1-no3 aku dah tambahi poinya

1) Lj = 90°/360° × 22/7 × 28 × 28
= ¼ × 88 × 28
= 616 cm²

2) Lj = 72°/360° × 3,14 × 10 × 10
= ¹/5 × 314
= 62,5 cm²

3)Lj = 150°/360° × 3,14 × 24 × 24
= 5/12 × 1808,64
= 753,5 cm²