Question

what is the radius of a circle in which a 30° arc is 2 inches long?

Answer 1

Length of arc=$\frac{Ф}{360} 2 \pi r$
2=$\frac{30}{360} *2*3.412*r$
2=0.5237r
r=$\frac{2}{0.5237}$
r=3.82 inches