Question 1107785
{{{circumference=2pi*radius}}}
If the circumferences are in a 6:1 ratio,
the radii are in a 6:1 ratio.
That means that the radius of the larger circle is 6 times the radius of the small one.
Let us call the small circle's radius {{{x}}} .
Then the large circle's radius is {{{6x}}} ,
and the difference between the radii is
{{{6x-x=10ft}}}
{{{x=10ft/5}}}
{{{x=10ft/5}}}
{{{x=highlight(2ft)}}} is the radius of the small circle , and
{{{2ft+10ft=highlight(12ft)}}} is the radius of the large circle.