A web designer wants to display the revenue earned in various market segments by Samsung Electronics. She plans to show the segments as stars in a night sky, with larger stars for segments with larger...

A web designer wants to display the revenue earned in various market segments by Samsung Electronics. She plans to show the segments as stars in a night sky, with larger stars for segments with larger revenue. Clicking on a star would popup details about that segment. This table gives the quarterly revenue of Samsung in 4 segments in 2009.

In order to obey the Area Principle, how large should she make the stars for these segments? (Hint: the area of a circle is
 times the square of the radius of the circle.)