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(x-0)² + (y-0)² = r²

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Q: What is the equation of a circle whose center is at the origin and whose radius is 16?
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What is the equation of a circle whose center is at the origin and whose radius is 10?

The equation of circle is (x−h)^2+(y−k)^2 = r^2, where h,k is the center of circle and r is the radius of circle. so, according to question center is origin and radius is 10, therefore, equation of circle is x^2 + y^2 = 100


Which is the equation of the circle with its center at origin and radius 8?

x2 + y2 = 64


What is the equation of the circle with the center at the origin and a radius of 9?

x² + y² = 81.


What is the equation of a circle with a center at the origin and a radius of 2?

x² + y² = 4.


What equation of the circle with its center at the origin and radius 9?

x2 + y2 = 81


What is equation of a circle whose center is at the origin?

x2 + y2 = r2, where r is the radius.


What is the equation of a circle whose center is at the origin and radius is 2?

It is x2 + y2 = 4


X2 plus y2 equals 64. what is the radius?

That's the equation of a circle with its center at the origin and a radius of 8.


What is the equation of a circle whose center is at the origin and whose radius is 4?

x2 + y2 = 2


What is the center and the radius of the circle with this equation x2 plus y2 equals 121?

Centre = (0,0), the origin; radius = 11


What is the equation of a unit circle?

A unit circle is a circle of radius 1. If it's center is at the origin of an xy-coordinate system, then the equation is x (squared) + y (squared) = 1


What is the equation of a circle with its center at the origin and radius 7?

(x - 0)2 + (y - 0)2 = 49