The question is as follows:
A 6-inch arc is drawn using a 4-inch radius. Describe the angular size of the arc (a) using radians; (b) using degrees.
I did the following to find the central angle of the circle that would create an arc of 6 inches.
$$ 2\pi (4)(\frac{x}{360}) = 6$$
From this equation, I found the value of $x$ to be $\approx 85.944$. I know that it would take $360 \div 85.944$ (which is $\approx 4.189$) arcs of 6 inches to fill the circumference of the circle. I don't know how to put this number into radians or is $4.189$ already in radians and $85.944$ already in degrees?
Any help will be greatly appreciated.