Hi gokul,
at first you should start with reading the context help of the function.
Then you should use it's "rect" input to define the region where the arc should appear.
And now you might notice: the center of that rect is also the center of the arc...
Best regards,
GerdW

using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019