**Covid-19 has led the world to go through a phenomenal transition .**

**E-learning is the future today.**

**Stay Home , Stay Safe and keep learning!!!**

A circle is the set of all points in a plane which are at a constant distance from a fixed point in the plane. A fixed point is called the 'center' and the constant distance is called the radius of the circle.

A circle has an eccentricity of zero, so the eccentricity shows you how "un-circular" the curve is. Bigger eccentricities are less curved. The standard equation of circle with center as origin (0,0)is given by

The equation of circle is x

The standard equation of circle with center as (h,k) is given by

Here the center of the circle is (2,1) and radius is 5.So the graph will be

1) Find the equation of the circle with center(-3,2) and radius 5.

Here, the center (h,k) is (-3,2) and radius is 5. Hence, substituting, h= -3 and k = 2 and r = 5 in

(x - h)

[x-(-3)]

⇒ (x+3)

_________________________________________________________________

2) Find the center and radius of the circle. x

The given equation is (x

Now, completing the square within the parenthesis, we get

(x

(x -1)

Comparing it with the equation of the circle, we see that the center of the circle is (1,-2) and radius is √13.

_________________________________________________________________

Graph Dictionary

Home Page

**Covid-19 has affected physical interactions between people.**

**Don't let it affect your learning.**

GMAT

GRE

1st Grade

2nd Grade

3rd Grade

4th Grade

5th Grade

6th Grade

7th grade math

8th grade math

9th grade math

10th grade math

11th grade math

12th grade math

Precalculus

Worksheets

Chapter wise Test

MCQ's

Math Dictionary

Graph Dictionary

Multiplicative tables

Math Teasers

NTSE

Chinese Numbers

CBSE Sample Papers