Question 1179012


radius {{{r=21in}}}
arc length ={{{ 22.5in}}}

central angle:

the ratio of circumference to the arc length is equal to the ratio of {{{360}}} to central angle {{{theta}}}

{{{(2*21*3.14)/22.5=360/theta}}}

{{{5.86133=360/theta}}}

{{{theta=360/(5.86133)}}}

{{{ theta= 61.4 }}}degrees