The diagram represents the floor of museum . The figureis made up of rectangle and a triangle. What is the area of the floor? 29ft,5ft,20ft,38ft

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.