At Orange County Choppers, Paul Teutul Junior needs to make a circular metal disk area 1000in^2. To keep Paul Senior from blowing a gasket, Paul Junior must deviate from the ideal area of the disk, which is 1000in^2, by less then ±4 in^2. How close to the ideal radius must the Flowjet ( the machine that cuts the disk) be to maintain tranquility at OCC (Orange County Choppers)? What is the corresponding value of δ?