I'm not quite sure on how to find the length of an arc can someone ?

Ineed with number 17 i don’t get it at alll

Each morning papa notes the birds feeding on his bird feeder. so far this month he has see. 59 blue jays, 68 black crows, 12 red robin's and 1 cardinal. what is the probability of a blue jay being the next bird papa sees

Enter the number of complex zeros for the polynomial function in the box. f(x) = x+ + 5x² +6