Difference Between Circle And Sphere

Difference Between Circle And Sphere is that circle is a 2D figure and sphere is a 3D figure. Circle and Sphere both are the very important geometry geometrical figures. The appearance of a circle and sphere is quite similar to each-other; however, they have many fundamental differences in between them. In this article, we will cover the fundamental differences between circle and sphere, along with the definition of circle and sphere.

What is a Circle?

A circle is a 2-D (two dimensional) closed and round shape in geometry. It has no edge or corners. The related important terms of circle are centre, radius, diameter, etc. From the centre, all the points distance are same in a circle. Examples of circle are car tire, wall clocks, bangles, etc.

The fundamental formulas related to circle are as follows:

Radius = Diameter/2
Diameter = 2 × Radius
Area of Circle = π r²
Circumference of Circle = 2πr

where,

π is a constant, value of a π is 22/7 or 3.14 (approximate)
r is Radius

What is Sphere

A sphere is a 3-D ( three dimensional ) geometrical shape. Sphere is symmetrical and round in shape. From its centre, all the points are equidistant at any of the axes. The important elements of a sphere are radius, diameter, volume, circumference, surface area, etc. Examples of sphere are football, globe etc.

The fundamental formulas of a sphere are as follows:

Diameter = 2 × radius of the sphere
Surface Area of Sphere = 4πr²
Volume of Sphere = (4/3)πr³

where,

π is a constant, value of a π is 22/7 or 3.14 (approx)
r is Radius

The difference between circle and sphere is tabulated below:

Particulars	Circle	Sphere
Dimensions	Circle is a 2-D ( two dimensional) figure.	It is a 3-dimensional figure.
Area Formula	Area of Circle = π r²	Area of Sphere = 4π r²
Volume Formula	It does not have volume.	Volume of a Sphere =4/3π r³
Diameter Formula	Diameter of a Circle = 2 r	Diameter of a Sphere = 2 r
Circumference Formula	Circumference of a Circle = 2 π r	It does not have circumference
Equation	Equation of a Circle = (x−a)²+(y−b)²= r²	Equation of a Sphere = (x−h)²+(y−k)²+(z−l)²=r²
Consideration	A circle is considered as a figure.	A sphere is considered as an object.
Examples	Car tire, coin, CD, wall clock, etc.	Globe, planet, oranges, etc.

Also, Check

Solved Example on Difference Between Circle And Sphere

Example 1: What is the circumference of a circle if the radius of this circle is 7 cm?

Solution:

Radius = 7 cm

We know,

Circumference of circle = 2 π r

Circumference of circle = 2 × (22/7) × 7 cm

Circumference of circle = 44 cm

Thus, the required circumference = 44 cm.

Example 2: What is the area of a circle if the radius of that circle is 2 meter?

Solution:

Given, radius = 2 meter

We know,

Area of circle = π r²

Area of circle = π (2)² meter²

Area of circle = 4π meter²

Thus, the required area of the circle = 4π meter²

Example 3: What is the volume of a sphere if the radius of that sphere is 3 cm?

Solution:

Given, radius of sphere = 3 cm

We know,

Volume of sphere = (4/3)πr³

Volume of sphere = (4/3) π (3)³ cm³

Volume of sphere = 36π cm³

Thus, the required volume of sphere is 36π cm³.

Example 4: What is the surface area of a sphere if the radius is 5 cm?

Solution:

Given, radius = 5 cm

We know,

Surface area of sphere = 4πr²

Surface area of sphere = 4π5² cm²

Surface area of sphere = 100π cm²

Thus, the required surface area of sphere = 100π cm².

Difference Between Circle And Sphere FAQs

Is a sphere two-dimension?

No, Sphere has three dimension shape. It has surface area as well as volume.

What is the area of a circle?

The area of a circle = πr² , where r is radius of this circle.

What is the circumference of a circle?

The circumference of a circle = 2πr , where r is radius and π is a constant, value of a π is approx 22/7 or 3.14

What is the volume of a circle?

Circle has no volume. Volume does not occur in circle as it is a 2D shape.

Reffered: https://www.geeksforgeeks.org

Mathematics

Related
Mean Squared Error: Definition, Formula, Interpretation and Examples
Critical Value
Collatz Conjecture: Fun Facts and More
How to Find Total Surface Area of a Cylinder
Rotation Matrix

Type:	Geek
Category:	Coding
Sub Category:	Tutorial
Uploaded by:	Admin
Views:	14