With innermost circle having a 1000 px diameter. Each of the segments -"rectangles"- have the same area. Quite close to radiuses change with the same distances, but it's a tad bit different if you check the mathematics behind. All objects overlapping, no rendering gaps should appear.
circular grid free icon was designed by Lazur URH for icons Png and presented to its users.
Lazur URH
3/12/2018