A circle had a radius of 13cm. Find the length s of the arc intercepted by a central angle of 3pie/4 radians. (Round your answer to the nearest tenth)

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. complete parts (a) and (b) below. business degrees nonbusiness degrees total male 189131 634650 823781 female 169539 885329 1054868 total 358670 1519979 1878649 (a) find the probability that a randomly selected student is male, given that the student received a business degree. the probability that a randomly selected student is male, given that the student received a business degree, is nothing. (round to three decimal places as needed.) (b) find the probability that a randomly selected student received a business degree, given that the student is female. the probability that a randomly selected student received a business degree, given that the student is female, is nothing. (round to three decimal places as needed.)

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.