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What is the equation of a circle centered at the origin with radius 20
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What is the equation of a circle centered at the origin with radius 20

User Porcupine
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1 Answer

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The equation for a circle is:

x^2 + y^2 = r^2

Where r is the radius of the circle:
x^2 + y^2 = 20^2 = 400
User Jpdus
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