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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 Linear Algebra, 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 - Sphere

Geometry - Area - Sphere


Expert: Azeem Hussain - 5/18/2009

Question
I recently took a geometry test, and i am required to correct all wrong answers.  The only question I seem to have trouble with is this.  "You are required to paint a water tower with a cylindrical base and a spherical top.  The cylinder has a base that is 12ft around and 85 ft high, and the sphere is 300ft around.  If a gallon of paint is 35$ per gallon, and one gallon covers 200 square feet, how much money do you spend on paint?"  Every website i go to says that to find the area of a sphere, you need the radius. How would i go about finding the area of the sphere?

Answer
Hello Roman,

The radius of a sphere can be found from its diameter, exactly as you would do for a circle: divide the circumference by 2π.
c=2πr
r=c/(2π)

In this case your radius would be 300/(2π).

Ask a follow-up if you need anymore help,
Azeem

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