Question

弧长75m,弦长65.66m,如何计算弦高与半径?

Answer 1

弧长C=75m,弦长L=65.66m,如何计算弦高H与半径R?

Rn+1=(1+(L-2*Rn*SIN(C/(2*Rn)))/(L-C*COS(C/(2*Rn))))*Rn

R0=40

R1=42.206

R2=42.541

R3=42.547

R4=42.547

R=42.547m

H=R-(R^2-(L/2)^2)^0.5

=42.547-(42.547^2-(75/2)^2)^0.5

=22.447m