My Math Forum  

Go Back   My Math Forum > College Math Forum > Calculus

Calculus Calculus Math Forum


Reply
 
LinkBack Thread Tools Display Modes
November 13th, 2010, 11:01 PM   #1
Newbie
 
Joined: Nov 2010

Posts: 4
Thanks: 0

Help me! Find the area

Find the area of the crescent-shaped region(called a lune) bounded by arcs of circles with radii r and R(see the figure)
http://www.mathhelpforum.com/math-help/ ... titled.png

Thank you very much
seit is offline  
 
November 14th, 2010, 03:00 AM   #2
Senior Member
 
stainburg's Avatar
 
Joined: Oct 2010
From: Changchun, China

Posts: 492
Thanks: 14

Re: Help me! Find the area

clue:
"area of pink" + "area of green"= 'half area of the smaller circle", so you need to get the area of pink.

[attachment=0:1f44t6p0]Untitled.PNG[/attachment:1f44t6p0]
Attached Images
File Type: png Untitled.PNG (30.6 KB, 1704 views)
stainburg is offline  
November 14th, 2010, 03:46 AM   #3
Newbie
 
Joined: Nov 2010

Posts: 4
Thanks: 0

Re: Help me! Find the area

Can you help me do it?
seit is offline  
November 14th, 2010, 03:47 AM   #4
Newbie
 
Joined: Nov 2010

Posts: 4
Thanks: 0

Re: Help me! Find the area

Quote:
Originally Posted by stainburg
clue:
"area of pink" + "area of green"= 'half area of the smaller circle", so you need to get the area of pink.

[attachment=0:2bj8v9te]Untitled.PNG[/attachment:2bj8v9te]
Can you help me to do it?
Thank you very much.
seit is offline  
November 14th, 2010, 05:48 AM   #5
Senior Member
 
stainburg's Avatar
 
Joined: Oct 2010
From: Changchun, China

Posts: 492
Thanks: 14

Re: Help me! Find the area











stainburg is offline  
Reply

  My Math Forum > College Math Forum > Calculus

Tags
area, find



Search tags for this page
Click on a term to search for related topics.
Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
find the area help? johnny993 Algebra 1 November 12th, 2013 09:17 PM
find area of BDC gelatine1 Algebra 13 January 4th, 2013 10:42 AM
find area Albert.Teng Algebra 2 July 21st, 2012 12:17 AM
Find the area Arley Calculus 3 April 28th, 2012 09:22 AM
Find area 450081592 Calculus 7 January 19th, 2010 02:45 AM





Copyright © 2019 My Math Forum. All rights reserved.