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Figure This!

The chocolate lover would choose the cookie with the rough edges.


Complete Solutions:
There are many ways to do this challenge.






Solution 1.
Trace the cookies on graph paper (see image at right) and count the number of squares each one covers. The smaller the squares, the better the estimate of the area.









Solution 2.
Cut out the cookies, put one on top of the other and cut off the parts of one that are not covered by the other. Try to fill in the extra space with the parts you cut off. If you cannot cover all of the first cookie with the parts of the second, the first one is larger. If you have pieces of the second cookie left when the first is covered, the second one is larger.








Solution 3.
Cover each cookie with something small (cereal or rice) and then compare the two quantities.

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