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Solve the Problem 125288in\frac { 125 } { 288 } \mathrm { in }

Question 38

Multiple Choice

Solve the problem.
-A reflecting telescope has a mirror shaped like a paraboloid of revolution. If the distance of the vertex to the focus is 30 feet and the distance across the top of the mirror is 50 inches, how deep is the mirror in the center?


A) 9 in.
B) 125288in\frac { 125 } { 288 } \mathrm { in } .
C) 1253456\frac { 125 } { 3456 } in.
D) 12524in.\frac { 125 } { 24 } \mathrm { in } .

Correct Answer:

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