#### Answer

Note that the two blue circles are externally tangent.

#### Work Step by Step

First we can use a straight edge to draw a straight line.
We can use a compass to draw a circle of radius $R$ such that the center of this circle is on the straight line.
Using the compass, we can draw four more circles of radius $R$ such that the center of each successive circle is a point where the previous circle intersects the straight line.
We can use the compass to draw a large circle of radius $2R$.
Note that the two blue circles are externally tangent.