Math CentralQuandaries & Queries


Question from Cey, a student:

how to i find the radius of a sphere with a volume of 1000cm cubed using the formula

v=4/3 pi r squared???????/


The volume of a sphere is

V = 4/3 π r3 not squared.

To find the radius if you know the volume, divide both sides of the equation above to get

r^3 = V/(4/3 pi)

Evaluate the right side and then take the cube root to find r.


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