Question 723904
if a running track is circular, 140 yards across the middle and eight feet wide, how much further do you go in running four laps if you run on the outside edge rather than the inside edge?
:
running inside edge, diameter = 140 yds
running outside edge diameter = 156 yrs, add 2*8
:
Find circumferences
{{{156*pi}}}*4 = 1960.35
{{{140*pi}}}*4 = 1759.29
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yds further =   201.6 yds