Change the density or radius Fun fact P•V=M M=Mass P=Density V=Volume, but this is 2d so it's P•A=M A=Area The circumference is the length of the circle. The formula is pi•d=c c=circumference d=diameter pi=3.141... To find the area apply Pi•R^2 R=Radius or distance from the edge to the center of the circle. Diameter =R2.
Physics and geometry helped. Look inside to find the math of it.