Question 1044725

 {{{C  = d*pi}}}   ->  circumference equals diameter times {{{pi}}} 
 
 for this problem  {{{d=20in}}}; so
 
         {{{C  = 20*3.14}}}
 
         {{{C = 62.83}}} (rounded to the hundredths place)
 

your choices: A)20 B)30 C) D)50 E)102
as you can see, none of the choices above is your answer