Solve the problem.The radius, r, of a sphere can be found using the formula 
where S is the surface area. If the surface area is 7918 square inches, what is the radius? (Use 3.14 for ?, and round your answer to the nearest tenth of an inch.)
A. 50.2 in.
B. 78.8 in.
C. 44.5 in.
D. 25.1 in.
Answer: D
Mathematics
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