<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)
There are 360 degrees so divide 360 by 20 and get 18 degrees
I think this is how you do it: You would multiply 3/8 to 3/4 min...then convert into decimal..and get 0.5 min.
She would need approximately 16 yards