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Allisa [31]
3 years ago
13

What's the lenght of side b in the figure below

Mathematics
1 answer:
Evgen [1.6K]3 years ago
3 0
Let's use Pythagorean theorem.  a^{2}+b^{2}=c^{2} where c is the hypotenuse.

So if we set it up:

7^{2}+b^{2}=13^{2}

now we simplify:

49+b^{2}=169

and get b^{2} by itself:

b^{2}=120

Now to get b by itself, we need to take the square root of both sides:

b=\sqrt{120}

And that's your answer!
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