Problem: in may , the groundskeeper at spring lake golf club built a circular green with an area of 90 π square feet . in august , the groundskeeper doubled the distance from the center of the green to the edge of the green . what is the total area of the renovated green ? 
Options: a ) 360 π , b ) 400 π , c ) 450 π , d ) 500 π , e ) 600 π
a