
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
May 22nd, 2014, 07:36 PM  #1 
Senior Member Joined: Nov 2013 From: Baku Posts: 502 Thanks: 56 Math Focus: Geometry 
Convert angle to radian. $\displaystyle C_A = \alpha \times r$ : arc length $\displaystyle A_S = \frac{\alpha \times r^2 }{2}$ : sector area r is a radius. And $\displaystyle \alpha$ is an angle in radians. And $\displaystyle 150^\circ$ is $\displaystyle \frac{5 \pi}{12}$, or may be it is not $\displaystyle \frac{5 \pi}{12}$, better check it yourself. 

Tags 
arc, area, length, sector 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Help with finding an area of a sector  coolcat3  Algebra  4  October 8th, 2013 01:39 PM 
help (the area of a sector)  J.Xavier  Algebra  2  September 13th, 2013 12:33 PM 
Arc length & area of surface of revolution  hiy312  Calculus  1  June 4th, 2012 06:46 AM 
Area of a Sector of a Circle  Julie  Algebra  2  May 18th, 2009 12:41 PM 
How does area of an ngon contrain the length of its sides?  telltree  Algebra  7  May 12th, 2009 05:01 PM 