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x2 + y2 = 4.

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Q: What is the equation of the circle centred at the origin with a radius of 2?
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Related questions

What is the equation of a circle centred on the origin with a radius of 5?

x² + y² = 25.


What kind of equation gives a circle on a graph?

x2 + y2 = r2 gives a circle centred on the origin, radius r.


When you make the circle bigger or smaller which number of the standard equation for a circle centered at the origin changes?

Standard equation for a circle centred at the origin is x2 + y2 = r2 where r is the radius of the circle. If you increase the size of the circle then the radius must increase, so r2 will be larger. eg a circle of radius 2 has the equation x2 + y2 = 4, if the radius increases to 3 then the equation becomes x2 + y2 = 9


Is the circle of radius 1 centered at the origin?

Can be centred anywhere. The circle x^2 + y^2 = z^2 is centred at the origin. X, y & z do not require to be different.


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


A Circle centered at the origin runs through the point 5 12what is the radius of the circle?

x2 + y2 = r2 describes a circle, radius r, centred on the origin. r is thus sqrt(25 + 144) ie 13 units.


The equation of a circle centered at the origin is x2 plus y2 16. What is the radius of the circle?

If that equals 16 then the radius is 4


What is the equation of a circle at the origin and radius 2.5?

x2 + y2 = 6.25


What is the radius for a circle with the equation x2 plus y2 equals 9?

Equation of a circle centre the origin is: x2 + y2 = radius2 ⇒ radius = √9 = 3.


Which equation describes the circle with radius 6 that is centered at the origin?

The equation is: x2+y2 = radius2


This circle is centered at the origin and the length of its radius is 5 What is the equation of the circle?

x2 + y2 = 25


This circle is centered at the origin and the length of its radius is 4 What is the equation of the circle?

x2 + y2= 16