已知弦长L=3.36和弧长C=3.5,求半径R?Rn+1=(1+(L-2*Rn*SIN(C/(2*Rn)))/(L-C*COS(C/(2*Rn))))*RnR0=3R1=3.377R2=3.351R3=3.351R=3.351已知弦长L=0.83和弧长C=0.95,求半径R?Rn+1=(1+(L-2*Rn*SIN(C/(2*Rn)))/(L-C*COS(C/(2*Rn))))*RnR0=0.5R1=0.53R2=0.535R3=0.535R=0.535