courtj17
Answered

Identify the radius for the circle in standard form


x2 + y2 - 12x - 12y + 36 = 0


Question 6 options:

A144

B12

C6

D36

Verified Answer :

bcalle

The radius is 6
Complete the square on the equation and get
(x-6)^2 + (y-6)^2 =36
The circle equation is
(x-h)^2 + (y-k)^2 = r^2
Center(h,k) r=radius

EllaWeiserman

The radius of the circle is letter C: 6. You must rewrite the problem in standard form, then solve.

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