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About Lynn Houston
Expertise
I can answer questions in basic algebra and any grade school math.

Experience
Love math, currently helping my nephew get through Intermediate Algebra.

Education/Credentials
I majored in Math Ed in college (but decided not to teach), so have over 40 credits of math.

You are here: Experts > Science > Math for Kids > Basic Math > algibra

Basic Math - algibra

Expert: Lynn Houston - 9/30/2009

Question
how do i find the radius of a sphere with the volume= 4.5pie

Answer
Volume of a sphere =(4/3)*pi*r3

So just fill in what you know and solve for r (radius)

4.5pi = (4/3)*pi*r^3 multiply both sides by 3
3(4.5)pi = 4pir^3 divide both sides by pi
3(4.5) = 4r^3
13.5 = r^3 take the cube root of both sides (need calculator)
r = 2.38

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