Arc length: θ=60°, r=10 cm, Sector area: θ=90°, r=6 cm, Find θ if L=8π cm and r=12 cm, Find r if Area=25π cm² and θ=90°, Real life: pizza slice θ=45°, r=14 cm — find crust length, True/False: Arc length depends on θ and r, Formula check: Arc length = (θ/360)×2πr, Formula check: Sector area = (θ/360)×πr².

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