(1) The radius of the sphere is half of the diagonal of the cube, the surface area of the root number 3 is 4π* the radius square = 12π (2) The volume formula of the pyramid is V = 1/3h(S+ above S+ below S+√ above S * below S), and the ratio of the top and bottom areas of the pyramid is 60. The ratio of the area of the upper bottom surface to the area of the lower bottom surface in the middle section is 1: 4: 9, and the middle section of the frustum is divided into two parts with the same height. Substituting into the volume formula, the volume ratio is 7: 197.5. If it is a multiple-choice question, it is: the volume of the quadrangular cone P-ABCD is (1/3)*9*2=6.