PLS HELP THIS IS HARD ANYONE PLS

What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

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.)

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.