Question

Bantu jawab ya no. 1. bagian B,C,E, F dan no. 2 bagian A dan B

Answer 1

1. b. 40°/360° × (2 × 22/7 × 14 cm) =
1/9 × 88 cm = 9,77 cm

c. 60°/360° × (2 × 22/7 × 14 cm) =
1/6 × 88 cm = 14,66 cm

e. 40°/360° × (22/7 × 14 cm × 14 cm) =
1/9 × 616 cm = 68,44 cm²

f. 60°/360° × (22/7 × 14 cm × 14 cm) =
1/6 × 616 cm = 102,66 cm²


2. a. 108°/72° × 70 cm = 105 cm

b. 72°/108° × 216 cm² = 144 cm²