LET a=PI*ASIN(1/3)/(2*PI)
LET z=SQR(1-(1/3)^2)
LET b=(1/2)*(1/3)*z
LET c=4*(a+b)
LET d=(2/3)^2
LET e=(c-d)/2
LET f=(PI-c)/2
LET g=(f-e)/2
LET y=d+4*e+4*g
PRINT
PRINT d/d
PRINT e/d
PRINT g/d
PRINT
PRINT y
END