Question 1084974
A park has a circular lake {{{240}}}' in diameter.->
{{{240in = 6.67yd}}}

 then, radius is {{{6.67yd/2=3.33yd}}}

area of the lake is 

{{{(3.33yd)^2*pi=11.1*pi*yd^2}}}

 A walkway {{{6in}}}wide is around the lake;

{{{6in = 0.17yd}}}

 so, radius of the lake and walkway  is {{{3.33yd+0.17yd=3.5yd}}}

 area of  the lake and walkway:
{{{(3.5yd)^2*pi=12.25*pi*yd^2}}}

 area of  the walkway alone is:
 {{{12.25*pi*yd^2-11.1*pi*yd^2=1.15*pi*yd^2=1.15*3.14*yd^2=3.611yd^2}}}