The top and bottom contours of a pecled banana are represented by the two curves (x-3)*+4 and y=(x-3) on the interval [0,6] as graphed below. Given that Cross sections perpendicular to the x-axis are circles, a) What is the radius of the slice of banana when x 4? b) What is the radius of the slice of banana when x = 7? Does it make sense for us to consider this radius? c) Write an expression for the radius of any circular cross section for this banana. d) Find the volume of the banana.