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

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โˆ™ 2011-04-27 22:39:20
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Algebra

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A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

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Q: What is the equation for the radius of a circle?
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Related questions

What is the equation for finding the circumference of a circle from the radius?

You multiply the radius by pi.


The equation for the circle is x2 plus y2 equals 121 What is the length of the circle's radius?

Radius = 1111


If you Give a circle with a diameter of 4 what is the circumference?

the equation for the circumference of a circle is 2*radius*pi, or since the radius is half of the diameter 2*radius=diameter, we can simplify the equation to the circumference of a circle=diameter*pi


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


The equation of the inner circle is x2 plus y2 equals 4 the radius of the outer circle is four times the radius of the inner circle write the equation of the outer circle?

The inner circle is x2 + y2 = 4. The radius of the inner circle is the square root of 4, which is 2. To find the radius of the outer circle, multiply 2 times 4. The radius of the outer circle is 8. Square 8 (82 or 8 x 8) to find the number to put into the equation of the outer circle. This is 64. The equation for the outer circle is x2 + y2 = 64.


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


What is the equation for getting the circumference of a circle with radius?

2x3.142xr


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.


What is the equation of the circle with center 2 9 and radius 7?

depends on the equation.


This circle is centered at the origin and the length of its radius is 3. What is the circle's equation?

5


What is the equation for the circumference and radius?

The equation for circumference is 2(3.14)(r) or 3.14(d) where r=radius and d=diameter. The radius of a circle is half of the circumference, or the distance across the interior of a circle.


What is the equation of a circle with center (3 8) and a radius of 2?

Centre of the circle: (3, 8) Radius of the circle: 2 Cartesian equation of the circle: (x-3)^2 + (y-8)^2 = 4

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