Homework Help: MATH HELP PLEASE

Posted by PLEASE HELP on Monday, September 26, 2011 at 7:51pm.

You are given two different circles. The diameter of the first circle is the radius of the second circle. What is the ratio of the area of the larger circle to the area of the smaller circle. Your answer should be in the form of a simplified fraction. I have no idea where to start. Please help.
Thank you.

MATH HELP PLEASE - MathMate, Monday, September 26, 2011 at 9:55pm
When comparing similar figures (eg. circles with circles, squares with squares, etc.)
Ratio of area
= (ratio of linear dimension)²

In this case,
ratio of diameters=2/1=2
Can you find the ratio of areas?

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