Formulas for problems 16−18 : Arclength s=rθA=21r2θ mile =5280 feet Angular velocity Linear Speed ω=tθ v=rω 17. A w
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17. A weather radar system scans a circular area of radius 40 miles. In one second, it scans a sector with central angle of 75∘. What area (to the nearest square mile) is scanned in that time?