Question 1148755
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A square rock garden with sides of 80 feet is placed in the middle of a circular grass yard. If the circumference of the yard is 590 feet, then how much area is covered by grass?
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Square Rock Garden
20 feet, each side
{{{20^2=400*squarefeet}}}, area


Total Circular Region
{{{2pi*r=590}}}
{{{r=590/(2pi)}}}
{{{r=295/pi}}}, just the radius of the circular region


Area of just the grass:  {{{highlight_green(pi(295/pi)^2-400)}}}, in square feet.
Simplify and compute.