The sum of the interior angles of the polygon is 36,000. How much does this polygon have in total diagonal? PLS HELP ITS A TEST​

Anyone know? is appreciated! will mark brainliest if correct!

Anature center offer 2 guided walks. the morning walk is 2/3 miles. the evening walk is 3/6 mile. which is shorter

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list