弧长为C=135.7mm, 弦长为L=121.9mm, 半径为R多少?
Rn+1=(1+(L-2*Rn*SIN(C/(2*Rn)))/(L-C*COS(C/(2*Rn))))*Rn
R0=86
R1=85.496
R2=85.503
R3=85.503
R=85.503mm
弧长为C=135.7mm, 弦长为L=121.9mm, 半径为R多少?
Rn+1=(1+(L-2*Rn*SIN(C/(2*Rn)))/(L-C*COS(C/(2*Rn))))*Rn
R0=86
R1=85.496
R2=85.503
R3=85.503
R=85.503mm