The equation of a circle is (x−11)2+(y+15)2=144 .
what is the circle's radius?
enter your answer in the box.
units

 The radius of the circle is 12 units.

Step-by-step explanation:  The given equation of a circle is as follows :

We are to find he radius of the circle.

We know that

the standard form of the equation of a circle with center at the point (h, k) and radius r units is given by

From equation (i), we have

Comparing the above equation with the standard form, we get

radius, r = 12 units.

Thu, the radius of the circle is 12 units.

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d