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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 > Sphere - Surface Area

Geometry - Sphere - Surface Area


Expert: Azeem Hussain - 5/8/2009

Question
i have a globe that has a volume of 33.5103 inches cubed
i need to find the surface area of the globe.
i keep on getting 150

Answer
Hi George!

The volume of a sphere (a globe is a sphere) can be found by the equation V=(4(pi)r^3)/3.  Plug in V and solve for r.
V=(4(pi)r^3)/3
33.5103=(4(pi)r^3)/3
25.1327=(pi)r^3
r^3=8
r=2

At this point, you'll need to plug this radius into the equation for solving the surface area of a sphere is A=4(pi)r^2.
A=4(pi)r^2
A=4(pi)(2)^2
A=16(pi)
A=50.2655

ANSWER: The surface area is 50.2655 inches squared.

Thanks for asking,
Azeem

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