I believe the answer is 10.362
hope this helps
<em>Formula:</em>

<em>Plug in the values:</em>

<em>Simplify LHS:</em>

<em>Multiply by 1936 on both sides:</em>

<em>Simplify RHS:</em>

<em>Square root both sides:</em>
Answer: The radius is 4 units. (Answer B)
By making lines with an X and Y axis then add the numbers you need
Quadrant 4 is the correct answer, and it's the only