Ok, so im having trouble solving this.. me its worth 15 points

Is the square root of 4 plus the square root of 16 rational?

An object in geometry with no width, length or height is a(n):

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?