Answers

2014-07-04T16:11:03+08:00
Imagine the two sides to be the length and width of a triangle, and the line he drew as the hypotenuse. Thus, we can use the Pythagorean theorem:
c² = a² + b²
c² = 12² + 16²
c² = 144 + 256
c² = 400
c = 20 in.
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