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# All formulas of sphere and hemisphere sphere

It is a solid that has only one plane and each point of its plane is equally spaced from a fixed point. This point is called the center of the sphere and the distance of any point of the sphere from the center is called the radius of the sphere.

Volume of sphere=4/3πr³

The entire area of the sphere=4πr²

Volume of spherical spindle = 4/3 π (R³-r³)

When the radius of the sphere is k

(1), the curved surface area becomes k².

(2) Volume becomes k³ times.

Hemisphere

If a plane is drawn from the center of the sphere, the sphere is divided into 2 equal half spheres, each sphere is called half sphere.

Volume of a semicircle = 2/3 πr³

Curve of hemisphere = 2πr²

The entire area of the hemisphere’s sphere = 3πr²

## 3 thoughts on “All formulas of sphere and hemisphere”

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