If p(c)=.29, p(d)=.47 and p(c and )= 0, are the events c and d mutually exclusive? find p(c or d)

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?