The volume of a sphere can be calculated using the followin formula: Knowing the radius.

Formula Knowing the radius.

If you know the radius of a sphere, you can calculate its volume using the following formula:

$$V= 4/3*pi*r^3$$

Radio Value

Volume Result

Where:

$$V = "Volume"$$
$$r = "Radius value"$$

Formula for Half Sphere.

If you know the radius of the half sphere, you can calculate its volume using the following formula:

$$V= (4/3*pi*r^3)/2$$

Radius Value

Volume Result

Where:

$$V = "Volume"$$
$$r = "radius value"$$

Sphere Definition

Is the geometric figure that has round shape, all the points have the same disntance to the center.

Volume Definition

Is the space that occupies an object in space, is delimited by the walls of the object, can be regular or irregular.

Formula Definition

It is a representation of a rule or a general principle using letters. (Algebra, A. Baldor)
When describing formulas in plural, it is also valid to say "formulae".

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