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Nastasia [14]
3 years ago
9

The equation $(x - 7)^2 + (y + 13)^2 = 12$ represents a circle. What is its radius?

Mathematics
1 answer:
miskamm [114]3 years ago
7 0

Answer:

<h3>2√3</h3>

Step-by-step explanation:

The standard equation of a circle is expressed as;

(x-a)²+(y-b)² = r² where;

(a, b) is the center of the circle

r is the radius of the circle

Given the equation (x - 7)^2 + (y + 13)^2 = 12

On comparing;

r² = 12

Take the square root of both sides

√r² = √12

r = √12

r = √4*3

r = 2√3

Hence the radius of the circle is 2√3

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