Have fun solving
Here have an upright one
Looks to me to be an error in the fig.4 calculation. I have the Radius at 12.5556 So C/2+R= 52.000 Therefore the original Circumference = 78.88916144282402 But Fig.4 should have a perimeter of 22.416745180353001996210391315776
Here have an upright one
Looks to me to be an error in the fig.4 calculation.
I have the Radius at 12.5556 So C/2+R= 52.000
Therefore the original Circumference = 78.88916144282402
But Fig.4 should have a perimeter of 22.416745180353001996210391315776