In pythagoras's theorem, generally a is the shortest side, b is the second shortest and c is the hypotenuse: 
. However, there is a problem. The questions aren't actually possible without using sine, cosine, and tangent (which are mathematical ratios if you didn't know). I can help you with this but it will take time explaining.
Ms Quon discovered that 40 students like soccer, 20 liked baseball, 10 liked football, and 5 liked swimming.
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