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Question:

If side a = 6, side b = 9, what is the length of the hypotenuse of this right triangle?

A $7148_w48_h22.png$
Explaination

According to the Pythagorean theorem, the hypotenuse squared is equal to the sum of the two perpendicular sides squared: $5452_w222_h18.png$
$2099_w74_h19.png$.