A radius is the distance from the centre of a circle (or sphere) to its circumference (or surface). It is a straight line and has dimensions [L]. It has only a length, no volume. So there is no such furmula.
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The radius of a sphere is equal to one-half the diameter. If the volume of the sphere is known, then the radius (r) is equal to the cube root of 3/4 of (Volume/pi).
The formula for radius of a cone is radius is equals to square root of volume times 3, which is divided by height times pie. Pie refers to 22 divided by 7.
* means times/multiplied by Volume of cylinder: pi*radius sq.*height Surface Area of Cylinder: (2*pi*radius sq.) + (2*pi*radius*height) Formula For Surface Area sa=(2x(3.14)r2+[2x(3.14)xr]xh Formula For Volume (3.14)r2xh
a cone's volume>>> V = 1/3 [ (pi)*(radius*squared)*(height) ] so volume equals , (one third) of (pi) times (radius squared) times (height)
The formula for the volume of a sphere is: 4/3*pi*radius^3 measured in cubic units