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Math·Geometry and Trigonometry·Circles

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In the circle, $O$ is the center and $\angle AOB$ is a right angle. If the area of the shaded region is $37\pi$ square units, what is the length, in units, of $OA$?

A

$74$

B

$148$

C

$\sqrt{148}$

D

$\sqrt{592}$