Question 389410
When you ride on a ferris wheel you are sitting on the circumference of the wheel.
When the wheel turns one revolution, you would travel a distance exactly equal to the length of the circumference, right?
So you need to find the circumference (C) of a wheel whose diameter (D) is 20 meters.
Recall:
{{{C = (pi)D}}} Substitute {{{D = 20}}} and {{{pi = 3.14}}}approx.
{{{C = (3.14)(20)}}}
{{{C = 62.8}}}meters.