S=pi*R^2~3.14*R^2
R^2=S/3.14
R=sqrt(S/3.14)
R1=sqrt(200.96/3.14)=sqrt(64)=8дм
R2=sqrt(7.065/3.14)=sqrt(2.25)=1.5 м
S=pi*R^2~3.14*R^2
R^2=S/3.14
R=sqrt(S/3.14)
R1=sqrt(200.96/3.14)=sqrt(64)=8дм
R2=sqrt(7.065/3.14)=sqrt(2.25)=1.5 м