- #1

- 4

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R is the radius of the circle

r is the new radius

C is the Circumference

h=17.7062683767

t=3.23606808139

(R/h)= r

(r/t)*360=C

with an error of 0.005079643% compared to C=pi*d because:

(180/(h*d))= 3.14143307999

3.14143307999/pi=.999949206146

example

R=6

6/h=.338863043999=r

(r/t)*360=37.6971969599=C

(pi*d)12*pi=37.6991118431

37.6971969599/37.6991118431=.999949206146