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	Math Help Forum > Pre-University Math Help > Geometry Find the ratio of the white to the shaded area..? User Name Save? Password Register Forum Rules FAQ Donate Members List Arcade Download MHF Flyer Search Today's Posts Mark Forums Read   Thread Tools Display Modes   #1   June 23rd, 2009, 02:54 PM adeshSB Newbie   Join Date: Nov 2008 Posts: 12 Country: Thanks: 5 Thanked 1 Time in 1 Post Find the ratio of the white to the shaded area..? Ok well... The diagram shows 2 concentric circles. The large one has a radius of 5cm and the smaller one has a radius of 3cm. Find the ratio of the white to the shaded area..? Can anyone help? Pleasee... Attached Images   Advertisement     #2   June 23rd, 2009, 03:16 PM masters He's dead, Jim   Join Date: Jan 2008 Location: Big Stone Gap, Virginia Posts: 2,045 Country: Thanks: 511 Thanked 1,768 Times in 1,210 Posts Quote: Originally Posted by adeshSB Ok well... The diagram shows 2 concentric circles. The large one has a radius of 5cm and the smaller one has a radius of 3cm. Find the ratio of the white to the shaded area..? Can anyone help? Pleasee... Hi adeshSB, The area of the shaded area is using The area of the bigger circle is using the same reasoning. The difference between these areas is the area of the white part which would be The ratio of the white to the shaded area would then be: __________________ He who knows not and knows not that he knows not is a fool, shun him. He who knows not and knows that he knows not is a child, teach him. He who knows and knows not that he knows is asleep, wake him. And he who knows and knows that he knows is wise, follow him. -- Persian Proverb To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. « Prove that the bisectors of a triangle all intersect at the same point? | Top | Translation of axes » Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Trackbacks are Off Pingbacks are Off Refbacks are Off Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Pre-University Math Help     Pre-Algebra and Algebra     Geometry     Trigonometry     Pre-Calculus     Basic Statistics and Probability     Other topics University Math Help     Calculus     Analysis, Topology and Differential Geometry     Linear and Abstract Algebra     Number theory     Discrete Mathematics, Set Theory and Logic     Advanced Probability and Statistics     Advanced Applied Math     Differential Equations     Business Math     Other Advanced Topics Math Resources     LaTex Help     Mathematics Software Discussion     Calculator Discussion     Useful Math Websites     Mathematics News MHF Lounge     Chat Room         Live Chat     Problem of the Week     Pre-prints and other original work     Formal Debates         Proposals Challenges and Puzzles     Puzzles     Math Challenge Problems MHF Feedback and Announcements Forum     Question, Feedback and Comments     Announcements Our Other "Help Forums"     Physics Help Forum     Chemistry Help Forum All times are GMT -7. The time now is 08:30 PM. Contact Us - Math Help - Archive - Top Powered by vBulletin® Version 3.7.3 Copyright ©2000 - 2009, Jelsoft Enterprises Ltd. SEO by vBSEO 3.2.0 ©2008, Crawlability, Inc. ©2005 - 2009 Math Help Forum

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