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What is the equation of a circle with center (2,-5) and radius 4?

User Ikran
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2 Answers

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Answer:

(x - 2)² + (y + k)² = 4²

Explanation:

To answer this, we insert the given into (center x-coordinate 2, center y-coordinate -5, radius 4) into the general formula for a circle with center at (h, k) and radius r: (x - h)² + (y - k)² = r² → (x - 2)² + (y + k)² = 4²

User WinterTTr
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4.3k points
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The GENERAL equation for EVERY circle with its center at (A, B) and a radius of R is

(x - A)² + (y - B)² = R² .

So if you just stuff in the numbers given in this question, the equation of THIS circle is

(x - 2)² + (y + 5)² = 16

User Xiiryo
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4.8k points