Four angles in a pentagon were measured 50,73,161,146 what is the missing measure And if you could help me with both pentagons for question 6 :)

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?