What is the perimeter, to the nearest hundredth of a unit, of the following polygon with vertices (-3,2), (1,2), (3,-1), (0,-3), (-4,-3)?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.