Answer :
The circumference of ANY circle is (pi) times (diameter). Doesn't matter
if it's one tiny link in the silver chain of a necklace or the circular orbit of
a planet.
Circumference = (pi) times (diameter) .
Please memorize that. In high school, you should already have it memorized.
The diameter of the ferris wheel is 250-ft.
Exact answer: Circumference = 250 pi feet
You can't write the exact answer completely in numbers,
because you can't write 'pi' completely in numbers.
Approximation using pi = 3.14 :
Circumference = (250) x (3.14) = 785 feet