An upright cylinderical tank with radius 7 m is being filled with water at a rate of 2 m^3/min. how fast is the height of the water increasing? (round the answer to four decimal places. )

Which one ? is the answer and how to find this answer

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?

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?