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About Azeem Hussain
Expertise
I can answer virtually any kind of question dealing with of Math 536 and below, my forte being in parabolic functions and analytical geometry. I'm currently learning Calculus I, and cannot answer questions that deal with subject matter more advanced than that.

Experience
I am neither a professor nor a teacher of this subject. I am merely a student who is gifted at mathematics and enjoys being of service to his community. I frequently tutor people in math and the results are usually great.

Publications
Reflections, Riverside School Board (2005, 2006)

Education/Credentials
Diploma of Secondary Studies from Chambly Academy High School, and IBO-MYP certificate as well. My lowest mark on a high school math final was 97%, peaking at 99% in 2006 and 2007 (second-highest Math 436 mark in the province). Being a Quebecer, I am fluent in English and French and can respond to questions easily in both languages.

Awards and Honors
Pascal Math Competition, School Champion(2007)

 
   

You are here:  Experts > Science > Math for Kids > Geometry > Area - Sector of a Circle

Topic: Geometry



Expert: Azeem Hussain
Date: 7/16/2008
Subject: Area - Sector of a Circle

Question
I need to calculate the area of a sector within a circle which is less than a semi-circle.  Can you help please

Answer
Hey Bill,

If you were asked to find the area of the sector which represented 1/8 of the circle, what would you do?  You would multiply the area of the full circle, πr^2, by the fraction, 1/8, such that area_sector=(1/8)πr^2.

If you're given the angle measure in degrees, you're also being given a fraction.  20 degrees is the fraction 20/360, which works out to 1/18.  Multiply your area by that.

If the angle is in radians, it too is a fraction, where the denominator is 2π.  For instance, π/4 radians would be 1/8 of the circle, because (π/4)/(2π)=1/8.

You get the idea.  Piece of cake, right?

Thanks for asking,
Azeem

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