Since we know the radius of the circle is 3 we can then determine that the missing right angle side = 1 and the bottom right angle side = 7 because it is parallel and equal to the side with length 7. We can then use the Pythagorean theorem to solve the side AC
[tex]a^2 + b^2 = c^2 \\c = \sqrt{1^2 + 7^2}\\c=\sqrt{50} \\c =7.07....[/tex]
