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x2 + y2 = 9

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Q: What equations correctly represents a circle centered at the origin with a radius of 3?
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What equations correctly represents a circle centered at the origins with a radius of 10?

Since there are no equations following, the answer must be "none of them".


Which of the following equations correctly represents a circle centered at the origin with a radius of 7?

x2+y2=7^2newtest3


Which equations correctly represents a circle centered at the origin with a radius of 5?

x2 + y2 = 25radius of 10?x2 + y2 = 100


What equation correctly represents a circle centered at the origin with a radius of 10?

x^2 + y^2 = 100


Which of the following circle equations represents a circle whose center is at points 0 0?

x2 + y2 = r2


How do you find the are of a circle with only the circumference?

It's important to know the formulas for all these characteristics of circles, and to recognize what they have in common. Area of a circle = πr2 Circumference of a circle = 2πr or dπ Where in the above equations r represents radius, and d is diameter (2r). Both these equations have r in them. Find the radius using the circumference equation, and then plug it into the equation for Area


Why do the standard equations for circles and ellipses have fewer terms when they are centered at the origin of the xy-plane?

If that bothers you, then it's easy to arrange it so that they don't.The standard equation for the circle centered at (A, B) is(x - A)2 + (y - B)2 = R2OK. So if the circle is centered at the origin, then 'A' and 'B' are zero.(x - 0)2 + (y - 0)2 = R2That has just as many terms as any other circle, but most peoplesimply don't bother writing all the zeros for this one. That's allthere is to the mystery.


The circumference of a circle represents?

The circumference of a circle represents its perimeter and the distance around it.


The circle is centered at the origin and the length of its radius is 8 What is the circle's equation?

The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.


Which number in the standard equation for a circle centered at the origin should one increase to make the circle larger?

You should increase the radius in the standard equation of a circle centered at the origin. The general form is ( x^2 + y^2 = r^2 ), where ( r ) is the radius. By increasing ( r ), you extend the distance from the center to any point on the circle, making it larger.


In pedigree a circle represents what?

It represents a child.


What types of equations or inequalities describe points x y that lie on a circle?

Linear equations or inequalities describe points x y that lie on a circle.