[tex]\sf Hello![/tex]
[tex]\sf Formula\: to \:calculate \:length\: of\: an \:Arc[/tex] :-
[tex]\dfrac{\sf Φ}{\sf 360} × \sf πr^{2}[/tex]
Here,
• [tex]\sf r = Radius[/tex]
• [tex]\sf Φ = \sf Angle\: subtended\: by\: radius\: at\: the\: Centre [/tex]
~ [tex]\sf iCarl[/tex]