## Online Course Discussion Forum

### Math Challenge I-C Geometry

Problem 4.22 (a) might be wrong. According to the pythagorean theorem, a^2+b^2=c^2. However, in this problem, 4^2+6^2 equals (2*square root of 13)^2. The correct question should be to just replace the hypotenuse by 2*square root of 13. Instead of, 2*square root of 10.

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