Answer:
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Explanation:
Let’s say the third length is x. We can use the Pythagorean Theorem which states that a^2 + b^2 = c^2 where a and b are the legs and c the hypotenuse. Using Pythagorean Theorem, we can see that x^2 + 6^2 = 9^2. Solving we get that x^2 = 45 -> x =
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I hope this helps!!! :)