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Q: What is equation of circle?
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If a circle is centered at the origin and the length of its radius is 6 What is the circle's equation?

The general equation of a circle is given by the formula(x - h)2 + (x - k)2 = r2, where (h, k) is the center of the circle, and r its radius.Since the center of the circle is (0, 0), the equation reduces tox2 + y2 = r2So that the equation of our circle is x2 + y2 = 36.


What is the equation for the radius of a circle?

The radius of a circle = the diameter of the circle divided by 2


When you make the circle smaller which number in the standard equation for a circle centered at the origin decreases?

The radius of the circle decreases when you make the circle smaller.


Is the equation for a circle a function?

The equation for a circle is a function in that it can be graphed and charted. One common equation is x^2 + y^2 = r^2.


Equation for area of a circle?

area of a circle = pi*r2


What is the equation for a circle with a center of (0 0) and a radius of 9?

The equation of the circle is: x^2 + y^2 = 81


The center of a circle is located at c(3-13). The x-axis is tangent to the circle at (30). Find the equation of the circle?

Equation of the circle: (x-3)^2 +( y+13)^2 = 169


The equation of the inner circle is x2 plus y2 equals 9 The radius of the outer circle is twice the radius of the inner circle What is the equation of the outer circle?

x^2+y^2=36


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 a smaller circle or larger circle easier?

depending on the circles equation..a larger circle is easier


What is the equation to find the perimeter of a circle?

Circumference ("perimeter") of a circle = (pi) x (diameter of the circle)


What equation represents the graph of a circle?

Equation of a circle when its centre is at (0, 0): x^2 + y^2 = radius^2 Equation of a circle when its centre is at (a, b): (x-a)^2 + (y-b)^2 = radius^2