GMAT Problem Solving (PS) | Re: Two circular regions of equal radii are centered at adjacent corners C

If you look at the answer choices, we need an answer that is larger than the radius of the quarter circle. The radius is given as root-18, which is roughly 4.~

So, we need a value that is larger than 4.~ but not astronomical!

Ball parking the answer choices will lead you to C.

you can check yourself. Again, this is when you are out of time. Else, Bunuel just struck the right chord!

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