lingkaran
r = 14 cm
Luas juring AOB
= ∠AOB/360° × luas lingkaran
= 72°/360° × πr²
= 1/5 × 22/7 × 14 × 14
= 123,2 cm²
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lingkaran
r = 14 cm
Luas juring AOB
= ∠AOB/360° × luas lingkaran
= 72°/360° × πr²
= 1/5 × 22/7 × 14 × 14
= 123,2 cm²