Duration of a Storm Suppose that meteorologists approximate the duration of a particular storm by using the formula
T = 0.07D3/2,
where T is the time (in hours) that a storm of diameter D (in miles) lasts.
(a) The National Weather Service reports that a storm 4 mi in diameter is headed toward New Haven. How many minutes is the storm expected to last?
(b) A thunderstorm is predicted for a farming community. The crops need at least 1.5 hr of rain. Local radar shows that the storm is 7 mi in diameter. Will it rain long enough to meet the farmers’ need?
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