Posted by **jack ** on Monday, June 17, 2013 at 2:56pm.

ABCD is a square. Γ1 is a circle that circumscribes ABCD (i.e. Γ1 passes through points A,B,C and D). Γ2 is a circle that is inscribed in ABCD (i.e. Γ2 is tangential to sides AB,BC,CD and DA). If the area of Γ1 is 100, what is the area of Γ2?

- math -
**Rahul**, Tuesday, June 18, 2013 at 5:22am
50

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