A homeowner has an octagonal gazebo inside a circular area. Each vertex of the gazebo of the circular area. The area that is inside the circle, but outside the gazebo, requires m represented by the function m(x) where x is the length of the radius of the circle in feet. that he will pay $1.50 per square foot of mulch. This cost is represented by the function requiring mulch. m(x) = x * x ^ 2 - 2sqrt(2) * x ^ 2; g(m) = 1.50r Which expression represents the cost of the mulch based on the radius of the circle ?