The table shows the functions representing the height and base of a cone for different values of x x Height f of x is equal to 2 x Area of Base g of x is equal to pi x squared 1 2 pi 2 4 4 pi 3 6 9 pi 4 8 16 pi The volume of the cone when x is equal to 3 is 18 pi Which equation can be used to represent the volume of the cone, cap v times x ?