A Curved Road Will Accommodate Traffic Traveling S Mph If $s = 3 \sqrt { r }$

question 305

Short Answer

A curved road will accommodate traffic traveling s mph if the radius of the curve is r feet, according to the formula $s = 3 \sqrt { r }$ . If engineers expect 55-mph traffic, what radius should they specify?

Write your result to the nearest foot. $r$ =__________ ft

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