What is the answer to thid expression 2³+(25-35)•5​

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. the diameter of the base of the cone is approximately three times the altitude. at what rate is the height of the pile changing when the pile is 12 feet high? (hint: the formula for the volume of a cone is v = 1 3 πr2h.)

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

Need this asap if anyone can i would be very grateful. if you could show workings that would really