Can someone help plss

14.8

Step-by-step explanation:

Pythagorean theorem! Or however you spell it lol.

So we can see that our triangle here has a little box on it's side. That means it's 90 degrees, so we can work from there and use the pythagorean theorem!

9^2+7^2=c^2  this is what you need to do to find the other side of the rectangle.

81+49=c^2

130=c^2

We can estimate that to be around 11.4!

Now that we know both sides of the rectangle, we can do the pythagorean theorem again (because the dotted line is the hypotenuse)! 9^2+11.4^2=c^2

My gosh this is a lot of work-

81+130=c^2

221=c^2

c=14.8

And so that would be the approximate answer! 14.8. I may be wrong though, so don't take this as 100% right.

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