Posted by Bob on Monday, June 17, 2013 at 11:44pm.
ABC is a triangle with ∠BAC=60∘. It has an incircle Γ, which is tangential to BC at D. It is given that BD=3 and DC=4. What is the value of [ABC]^2?

Math  shashank, Tuesday, June 18, 2013 at 3:45am
432

Math  Anonymous, Tuesday, June 18, 2013 at 5:25am
How???
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