## anonymous 5 years ago Find the radius, if the angle is 90degrees and the arc is 104

$l=r{\theta}$where l is the arc length, r the radius and theta the angle in radians. 90 degrees is equal to pi/4 radians, and your arc length is 104, so the radius is$r=\frac{104}{\pi/4}=\frac{416}{\pi}$