The organizers of a running race made a poster showing a scale drawing of the race route the route follows a rectangular path with a link of 3 km and width of 2 km and finishes back at the starting line the scale of the drawing is 8 inches equals 1/2 km the race organizers decide to decorate the poster by covering the entire scale drawing of the course with a piece of ribbon what is the total length of the ribbon and feet round your answer to the nearest 10th of a foot

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?