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?

## Answer This Question

## Related Questions

- summer math hw - one circle has a diameter of 10 inches. a second circle has a ...
- Please help with circle tangents geometry - Two circles of different sizes are ...
- GEOMETRY(CIRCLE) - Three circles with different radii have their centers on a ...
- math - A circle has an area of 25 pi cm^2.If a circle is drawn within that ...
- Math - Jason drew two circles. the diameter of the larger circle is twice the ...
- apex geometry - Hannah constructed two similar circles as seen in the image ...
- 8th grade math - circle A has a raduis that is twice the length og the raduis of...
- marh - The radii of two circles are in the ratio of 3 to 1. Find the area of the...
- math-geometry - The sum of the radii of two concentric circles is 40. A chord ...
- math...2 word problems - Two questions: (1) In a class every boy is friends with...

More Related Questions