The following text was written to the standard output stream when the GreySpace.java program was executed from IntelliJ.
Tablecloth = 800.0 Area of Tablecloth = 640000.0 Diameter of Yellow Diamond = 680.0 Radius of Yellow Diamond = 340.0 Length of Yellow Diamond = 480.83261120685233 Area of Yellow Diamond = 231200.00000000003 Diameter of Interior Yellow Square = 360.83261120685233 Radius of Interior Yellow Square = 180.41630560342617 Length of Interior Yellow Square = 255.14718625761432 Area of Interior Yellow Square = 65100.086655177736 Area of Grey Space = 473900.08665517776