This tutorial two steps
1-Rss icon shape drawing
2-Rounded Rectangle Shape drawing





To Begin,Draw a Polar Grid Tool



Concentric Dividers:2
Radial Dividers:0

Setting options then click OK



I used stroke "5px"



Select Object>Path>Outline Stroke



Select Circle shape

Window>Transform or Shift F8

Diameter:27,164mm

I learn radius:27,164/2=13,6




Select rectangle tool click on layer open setting options



Rectangle on Circle Shape then click right button select "Clipping Mask"



Clipping Masked



Window>Pathfinder>Merge


Click mouse right button on layer select "Show Rules" or View>Show Rules
or "Ctrl+R"

Draw on layer circle



Effect>Stylize>Outer Glow

Finished First Steps

To Begin second Steps



To begin, draw a rounded rectangle



Copy rounded rectangle Copy(Ctrl+C) and Paste(Ctrl+V)



Select pen tool draw a rounded rectangle on line



Select shapes then Window>Pathfinder>Divide



Select shape and copy



Paste first shape



I used radial gradient color a rounded rectangle and shape color grey



Select shapes and Window>Transparency or Shift+Ctrl+F10

I used opacity:42



Select Rss icon Shape move to rounded rectangle then Window>Align

Vertical Align Center click
Horizontal Align Center click
Vertical Distribute Center click
Horizontal Distribute Center Click


Finalll....