The surface area, , of a sphere in terms of its radius,
, is given by . Express as a function of and find,
to the nearest tenth of an inch, the radius of a sphere whose
surface area is 1000 square inches.

- A
, 8.9 inches
- B
, 0.4 inches
- C
, 79.6 inches
- D
, 0.1 inches
- E
, 2.5 inches