I need some help with this problem plz help ?

1foot = 12 inches; 1 yard = 3 feet

Which of the following three dimensional figures has a circle as it’s base

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?