Why am I not surprised that you actually calculated the number of 10" pies in a 42-incher? If you tell me that you used a slip-stick, I'm gonna plotz! LOL!
Actually, I figure each 10" pie is about $3.18, not $2.90.
Check your math. The radius of a 42" pie is 21" not 22".
56.09/(22/5)² ≈ 2.90
56.09/(21/5)² ≈ 3.18
I wonder if they picked 42" because that's the answer to life, the universe, and everything.

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