?????????? leng av diagonal=85 ?????????
diagonal make rite triangel
if angel=35deg, then 1 side=85*sine(35 deg) & othere side=85*kosine(35 deg)
side 1=85*sine(35)=85*0.573576436=48.75399709
side 2=85*kosine(35)=85*0.819152044=69.62792376
half-rim=leng+wide=118.3819209
rim-leng=2*half-rim=236.7638417