Suppose two cars depart from a four-way intersection at the same time, one heading north and the other heading west. The car heading north travels at the steady speed of30ft/secand the car heading west travels at the steady speed of64ft/sec.

(a) Find the distance in miles between the two cars after3hours46minutes. (Round your answer to one decimal place.)

answer:_____________mi

(b)When are the two cars 1 mile apart? (Round your answer to one decimal place.

answer:______________sec