How do I find the radius of a sphere, given the volume?

V= 9/2

So 9/2=4/3 pi r^3

But with my poor taste for math, that's about as far as I can get....

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  • 1 decade ago
    Favorite Answer

    volume of a sphere= 4/3(pi)r(cubed)

    **sorry for lack of the right symbols

    so, in tht formula, r = radious

    if the volume is 9/2 you can plug tht into the formula:

    9/2 = 4/3(pi)r(cubed)

    then solve using algebra

    hope i helped

    wow, sry, i just realized u already got tht far.

    u can divide 9/2 (which is also 4.5) by 4/3

    u shud have 3.375...

    3.375 = pi r cubed

    then divide by pi

    screw tht, ur answer is (about) 1.2

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  • 1 decade ago

    9/2 = 4/3 pi r^3

    then

    9/2 x 3/4pi = r^3

    27/8pi = r^3

    then just cube root 27/8pi that's the radius..

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  • Anonymous
    1 decade ago

    ok, so from that

    you need to move the rest over to the other side

    (so that the unknown, being R, is by itself)

    so you move 4/3 pi over

    then you move the cubed sign over

    (cubed root)

    that should be it

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  • 1 decade ago

    screw you do your homework

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