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How do you find the radius when you know the volume of a sphere?
Wiki User
∙ 11y ago
The volume of the sphere is: V=4πr3/3.
Then r=0,62 x (cubic root from V)
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Call the volume 'V'.
Call the radius 'R'.
The volume of a sphere is V = 4/3 (pi) R3 .
Multiply both sides of the formula by 3/4 :
3/4 V = (pi) R3
Divide each side by pi :
3V/4 pi = R3
Take the cube root of each side :
R = cube root of (3V/4 pi)
The first answer up above simplified this somewhat, by taking (3/4 pi)
out of the cube root, and you wind up with:
R = 0.62 times the cube root of ( V ) . (rounded)
Wiki User
∙ 11y ago
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What is the formula for finding the radius of a circle when you have the volume?
If by circle you mean sphere, then the volume of a sphere is: 4/3 * pi * radius^3. If you already know the volume, then here's what you do: 1. Multiply the volume by 3/4. 2. Divide the volume by pi. 3. Take the cube root of both sides In other words, the formula for radius when volume is known is: ( ( Volume * 3 ) / ( 4 * pi ) ) ^ (1/3)
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