Comments on: How do I find the ratio of the area of circle I and circlle ll ? http://www.thearealist.com/circle-area/how-do-i-find-the-ratio-of-the-area-of-circle-i-and-circlle-ll Fri, 03 Feb 2012 13:07:59 -0500 http://wordpress.org/?v=2.8.4 hourly 1 By: Caiso http://www.thearealist.com/circle-area/how-do-i-find-the-ratio-of-the-area-of-circle-i-and-circlle-ll/comment-page-1#comment-1941 Caiso Sat, 27 Feb 2010 08:49:59 +0000 http://www.thearealist.com/circle-area/how-do-i-find-the-ratio-of-the-area-of-circle-i-and-circlle-ll#comment-1941 Let's say circle I has radius of 1 and circle II has a radius of 2. Find the areas: circle I = π * 1² = π * 1 = π circle II = π * 2² = π * 4 = 4π find the ratio between the areas π / 4π 1/4 or 1:4<br><b>References : </b><br> Let’s say circle I has radius of 1 and circle II has a radius of 2. Find the areas:
circle I = π * 1² = π * 1 = π
circle II = π * 2² = π * 4 = 4π

find the ratio between the areas
π / 4π

1/4 or 1:4
References :

]]> By: Geezah http://www.thearealist.com/circle-area/how-do-i-find-the-ratio-of-the-area-of-circle-i-and-circlle-ll/comment-page-1#comment-1940 Geezah Sat, 27 Feb 2010 08:01:59 +0000 http://www.thearealist.com/circle-area/how-do-i-find-the-ratio-of-the-area-of-circle-i-and-circlle-ll#comment-1940 You know that the area of a circle is A = pi * r^2. Let's say the radius of the smaller circle is "x". Then the radius of the larger circle is "2x". So the ratio of the smaller circle's area to the bigger circle's area is pi r^2 : pi (2x)^2, which you can reduce from there. You should get 1:4.<br><b>References : </b><br> You know that the area of a circle is A = pi * r^2. Let’s say the radius of the smaller circle is "x". Then the radius of the larger circle is "2x". So the ratio of the smaller circle’s area to the bigger circle’s area is pi r^2 : pi (2x)^2, which you can reduce from there. You should get 1:4.
References :

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