Asked by Lance

If an elliptic race track is 100 yards long and 20 yards wide, then how far apart are the foci?

Answers

Answered by Reiny
Place your ellipse into standard position,
a = 50, b = 10

for such as ellipse:
c^2 + b^2 = a^2

find c,
the distance between 2 foci would be 2c
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