TOLONG JAWAB AK KASIH MAHKOTANYA YG BENAR​

Jawaban:

1) L COD = 251,2 cm²

2) L TOU = 1695,6 cm²

3) L ROS = 308 cm²

Penjelasan dengan langkah-langkah:

• r = jari-jari lingkaran

• π = 22/7 atau 3,14

Rumus luas juring

= (∠besar sudut /360°) × Luas lingkaran

1) L COD = (∠COD/360°) × πr²

L COD = (72/360) × 3,14 × (20)²

L COD = 1/5 × 3,14 × 400

L COD = 251,2 cm²

2) L TOU = (∠TOU/360°) × πr²

L TOU = (150/360) × 3,14 × (36)²

L TOU = 5/12 × 3,14 × 1296

L TOU = 1695,6 cm²

3) L ROS = (∠ROS/360°) × πr²

L ROS = (45/360) × 22/7 × (28)²

L ROS = 1/8 × 22/7 × 784

L ROS = 1/4 × 11 × 112

L ROS = 308 cm²

Semoga membantu