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well you would times that by: R2=D*3.14(pie)=C

Q: What is the equation of a circle in standard form if the radius is 3?

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The standard equation of a circle, with center in (a,b) and radius r, is: (x-a)2 + (y-b)2 = r2

(x - A)2 + (y - B)2 = R2 The center of the circle is the point (A, B) . The circle's radius is ' R '.

(x - h)2 + (y - v)2 = r2

The answer is indeterminate. For example, if the equation is of the form x2 - 2ax + y2 - 2by = 25, all that can be said of the radius of the circle is that it is greater than 5.

To determine the center and radius of a circle described by an equation in the form "(x-h)^2 + (y-k)^2 = r^2", we need to rewrite the given equation in that form. The equation (x-7)^2 + (y-6)^2 = 2100 is already in that form. Therefore, the center of the circle is at the point (7, 6) and the radius is the square root of 2100.

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The standard equation of a circle, with center in (a,b) and radius r, is: (x-a)2 + (y-b)2 = r2

Area of a circle = pi*radius squared Circumference of a circle = 2*pi*radius or diameter*pi

(x - A)2 + (y - B)2 = R2 The center of the circle is the point (A, B) . The circle's radius is ' R '.

The Pythagorean theorem is used to develop the equation of the circle. This is because a triangle can be drawn with the radius and any other adjacent line in the circle.

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.

(x-2)^2 +(y-3)^2 = 16

(x - h)2 + (y - v)2 = r2

The answer is indeterminate. For example, if the equation is of the form x2 - 2ax + y2 - 2by = 25, all that can be said of the radius of the circle is that it is greater than 5.

There are different standard forms for different things. There is a standard form for scientific notation. There is a standard form for the equation of a line, circle, ellipse, hyperbola and so on.

By using Cartesian equations for circles on the Cartesian plane

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There are probably several ways to approach it; one general equation for the circle is: (x - a)2 + (y - b)2 = r2 This describes a circle with center at coordinates (a, b), and with a radius of r.