What is the radius of the following circle?

The radius is: 1

Step-by-step explanation:

The equation of a circle in center-radius form is:

Where the center is at the point (h, k) and the radius is "r".

Given the equation of the circle:

You can identify that:

Then, solving for "r", you get that the radius of the circle is:

Radius = 1

Step-by-step explanation:

It is given that equation of a circle is x² + y² = 1

Points to remember

Equation of a circle with center(h, k) and radius r is given by,

(x - h)²  + (y - k)² = r²

To find the radius of circle

Compare the two equations

x² + y² = 1  and (x - h)²  + (y - k)² = r²

we get the center is (0, 0)

therefore we can write

r² = 1

r = 1

Therefore radius r = 1

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya

perimeter = 10 +  √10  units

explanation:

first, we will need to get the length of each line using the distance formula which is as follows:

distance = 

1- length of ab:

ab =   = 5 units

2- length of ac

length of ac is the same as ab = 5 units

3- length of bc:

bc =   =  √10  units

now, we can get the perimeter by adding the side lengths as follows:

perimeter = 5 + 5 +  √10

perimeter = 10 +  √10  units

hope this : )

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