A rancher in Beaumont decides to build a silo inside his corral. The rectangular corral measures 20 m by 15 m and the silo's base is circular with a diameter of x meters. Find a polynomial for the remaining area of the corral (in square meters) after the silo is built.
Area of corral including silo = 20*15 = 300 m^2 area of silo = pi(x/2)^2 m^2 Area of corral not including silo = 300 - pi(x/2)^2 m^2
