If the total area of a cube is 24, then the volume of its circumscribed sphere is______ .

If the total area of a cube is 24, then the volume of its circumscribed sphere is______ .

Let the edge length of the square be a, the surface area of the inscribed cube of the ball be 24, that is, 6A2 = 24, ∩ a = 2, so the edge length of the cube is 2, the diagonal of the cube is 23, so the radius of the ball is 3, so the volume of the ball is 4 π 3r3 = 4 π 3 (3) 3 = 43 π, so the answer is 43 π