Circle Radius and Area 1

Directions: Using the digits 0 to 9 at most one time each, fill in the boxes to create two possible circles. You may reuse all the digits for each statement.


How many digits of precision does pi require for this problem?


There are many possible answers including:
radius = 5 units and the area is between 21 and 678 square units
radius = 9 units and the area is between 87 and 260 square units

Source: Robert Kaplinsky

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One comment

  1. Jennifer Howland

    Could you provide further explanation on how to solve this problem? Thank you!

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