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Challenge 45: Three Squares
How big
Figure This!
While digging in an ancient city, an archeologist found this piece of a round plate. How can Ratio estimate the size of the original plate?
Ratio Shard
Need A Hint?
The probability of an event is a measure of the chance that it will occur. Insurance companies use probability to set rates, weather forecasters use probability to predict weather patterns, and doctors use probability to determine treatments for disease.

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