As shown in the figure, the three views of a geometric figure are three circles with equal radii, and each circle has two mutually perpendicular radii. If the volume of a geometry is 28π/3, its surface area is (17π).

It is a seven-eighth sphere with a volume of 28π. It can be found that the volume of the whole sphere is 32π and the radius of the sphere is 2.

Surface area of seven eighths of sphere = area of seven eighths of sphere+area of three sectors = 17π.