### What is Sphere?

A sphere is a geometrical three dimension round object. Sphere is a 3-dimensional circle. Every point on the surface is the same distance from the center. Here, you will learn Sphere | Hemisphere | Properties of Sphere.

A sphere is a solid contained by one curved surface which is such that all the points on it are equidistance from a fixed point within it. A fixed point known as centre. Any line drawn from the centre to the surface is known as a radius.

### Surface Area of Sphere

The surface area of a sphere is the total area of the surface of a sphere

Surface Area = 4 x π × radius2

Area of Rectangle = 4πr2 square units.

Surface Area of a Sphere by diameter
d = 2r units
Area = 4π(d2)2
=π x d2
Surface Area = π(d2)2

Where,
“d” is the diameter

### Volume of a Sphere

The amount of space occupied by the object three-dimensional object called a sphere is known as the volume of the sphere.

Volume = 43 x π × radius3

### Equation of a Sphere

In analytical geometry, the sphere with radius “r”, the locus of all the points (x, y, z) and centre (x0, y0, z0), then the equation of a sphere is given as

(x -x0)2 + (y – y0)2 + (z-z0)2 = r2

### Properties of Sphere

• The opposite sides of a rectangle are parallel.
• A sphere is perfectly symmetrical
• It is not a polyhedron
• All points on the surface are the same distance “r” from the center
• It has no side or corner
• It has constant mean curvature
• It has a constant width and circumference.

### Hemisphere

A hemisphere is half of a sphere. A plane through the centre of a sphere divides the sphere into two qual part. Each part is known as hemisphere .

Volume = 23 x π × radius3

Curved surface Area= 2 x π × radius3

Total surface Area= 3 x π × radius3

I hope, this article will help you lot to understand the Sphere | Hemisphere | Properties of Sphere, If you still have any doubts and problems with any topic of mathematics you can ask your problem in the Ask Question section. You will get a reply shortly.

I hope you have learned it properly.

## 7 thoughts on “Sphere | Hemisphere | Properties of Sphere”

1. I am very impressed. I found a lot of informative stuff in your article. Keep it up. Excellent JOB Thx!.

2. Many thanks for posting this particular content, We were searching for it on multilple web sites and also merely identified a fair degree of details here.

3. Im a huge fan already, man. Youve done a brilliant job making sure that people understand where youre coming from. And let me tell you, I get it. great stuff and I cant wait to check out more of your blogs. What youve got to say is important and needs to be check out.

4. Perfect piece of work you have done, this website is really cool with great info .

5. Nice post, I just passed this on to a cousin who was doing a little research on this. Thanks again.

6. I can see that you are putting a lots of efforts into your blog. Keep posting the good work.Some really helpful information in there. Bookmarked. Nice to see your site. Thanks