What is the radius of a circle whose equation is x 2 y 2 6y 18 0?

4
The radius of the given circle is 4.

What is the radius of the circle x 2 y 2 6y 0 *?

So the radius of the circle is 7 units.

How do you find the radius from the circumference of a circle?

To find the radius from the circumference of a circle, you have to do the following:

1. Divide the circumference by π, or 3.14 for an estimation. The result is the circle’s diameter.
2. Divide the diameter by 2.
3. There you go, you found the circle’s radius.

What is the area of a circle whose equation is x² y² 6x 8y?

The are of the circle given the equation is 25π sq.

What is the center of a circle whose equation is x 2 y 2 4x 8y 11 0?

(-2, 4)
The center of the circle of the given equation is x2 + y2 + 4x – 8y + 11 = 0 is (-2, 4).

What is the vertex of the parabola x2 4 y 2 )?

The vertex of the parabola is at (0, 2).

What are the center and radius of the circle defined by the equation x2 y2 6x 4y 4 0?

The center is =(3,−2) and the radius is =3. graph{(x^2+y^2-6x+4y+4)=0 [-14.08, 8.11, -5.51, 5.58]} Nam D. Jul 5, 2018.

What is the approximate length of radius r?

The approximate length of the radius r is 12 inches.

What is the equation for a circle with a radius of 64?

The equation for a circle is (x – h) 2 + (y – k) 2 = r 2, where (h,k) is the center of the circle and r is the radius. We can eliminate (x+3) + (y+2) = 4 and (x+3) 2 + (y+2) 2 = 64. The first equation does not square the terms in parentheses, and the second refers to a center of (-3,-2) rather than (3,2).

How to find the radius of a circle in the plane?

Find the radius of the circle whose center is O (2, 1), and the point P (5, 5) lies on the circumference. The equation of a circle in the cartesian plane is given by (x − h) 2 + (y − k) 2 = r 2.

What is the equation when the center of the circle is 0?

When the center of the circle is at origin (0,0), the equation of the circle reduces to x 2 + y 2 = r 2 The arc of the circle is the distance between two points along a section of a curve. The radius of the curve is the radius of the circle of which it is a part.

What is the general equation of a circle?

The general equation of a circle is (x – h) 2 + (y – k) 2 = r 2, where (h, k) represents the location of the circle’s center, and r represents the length of its radius. Circle A first has the equation of (x – 4) 2 + (y + 3) 2 = 29. This means that its center must be located at (4, –3), and its radius is √29.