Posted by **John** on Tuesday, May 13, 2014 at 5:53pm.

Let O and H be the circumcenter and orthocenter of triangle ABC, respectively. Let a, b, and c denote the side lengths, and let R denote the circumradius. Find OH^2 if R = 7 and a^2 + b^2 + c^2 = 29.

I tried to draw a diagram but it didn't work out too well. Could I have some hints plz? thanks

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