Biff's suspension bridge has 40-foot towers spaced 80 feet apart. the main cable reaches down to a height of 5 feet from the level road surface; seven vertical cables are spaced 10 feet from each tower and from one another. find the total length of the seven vertical cables, accurate the nearest tenth of a foot.

Atown recently dismissed 5 employees in order to meet their new budget reductions. the town had 5 employees over 50 years of age and 19 under 50. if the dismissed employees were selected at random, what is the probability that exactly 2 employees were over 50? express your answer as a fraction or a decimal number rounded to four decimal places.