Jawab:
masalah sudut gue pakarnya:
3. perhatikan ΔAOB adalh Δsama kaki, besar sudut dikakinya pasti sama dong.
∠OAB = 180 - ∠AOB /2 = 180 - 120 /2 = 60/2 = 30°
4. ∠PRQ = ∠PSQ = 31°
5. keliling = 2phi r = 2 x 22/7 x 21 = 44 x 3 = 132 cm
Luas = phi r² = 22/7 x 21 x 21 = 66 x 21 = 1386 cm²
6.
Penjelasan dengan langkah-langkah:
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Jawab:
masalah sudut gue pakarnya:
3. perhatikan ΔAOB adalh Δsama kaki, besar sudut dikakinya pasti sama dong.
∠OAB = 180 - ∠AOB /2 = 180 - 120 /2 = 60/2 = 30°
4. ∠PRQ = ∠PSQ = 31°
5. keliling = 2phi r = 2 x 22/7 x 21 = 44 x 3 = 132 cm
Luas = phi r² = 22/7 x 21 x 21 = 66 x 21 = 1386 cm²
6.
Penjelasan dengan langkah-langkah: