Follow along with the video below to see how to install our site as a web app on your home screen.
Note: this_feature_currently_requires_accessing_site_using_safari
So, the center hole has a diameter of 39 (radius = 39/2 = 19.5). The radius of the 3 offset arc (red color) = 19.5 + 4 = 23.5
What is the radius of this 3 offset arcs? See the diagram, I marked one offset arc with red colour.