Answer:
square root of 65
Step-by-step explanation:
So remember, the pythagreons theorm is A^2+B^2=C^2.
A and B are the side lengths, and C is the long, sloped line.
Lets count the side lengths, and plug them into the formula.
Line CB is 4, and counting AB, its 7. So lets plug them in:
4^2+7^2=C^2
Square the values(except for the missing one):
16+49=C^2
=
65=c^2
Now, we need to get C on its own.
To do this, we must get the square root of both sides:
[tex]\sqrt{65} =\sqrt{C^2}[/tex]
=
[tex]\sqrt{65} =C[/tex]
So C equals the square root of 65!
This is C, the third answer down(the square root of 65).
Hope this helps! :)