# What is an equation of a circle with its center at 3 and a radius of 4?

Table of Contents

## What is an equation of a circle with its center at 3 and a radius of 4?

1 Answer. The equation of the circle with center (−3,−4) and radius 3,in standard form, is: (x+3)2+(y+4)2 = 9.

## What is the standard equation of a circle with center 3 and radius 2?

1 Answer. The standard form of the equation of the circle would be (x−3)2+(y+2)2=9 .

## Which is the equation for a circle with center at?

A common form to write the equation of a circle in is the center-radius form. The center-radius form is: (x−h)2+(y−k)2=r2 Here, the center point is denoted by (h,k) and r is the radius of the circle.

## What is the equation of a circle of radius r centered at the origin?

The equation of a circle of radius r and centre the origin is x2 + y2 = r2 .

## What is the equation of a circle with Centre 0 0 and diameter 6 units?

Hence, the equation of the circle is x2+y2=36.

## What is the equation of a circle with center (- 2 3 and radius 5?

The standard equation of a circle is. where (a ,b) are the coordinates of the centre and r, the radius. substitute these values into the standard equation. ⇒(x−2)2+(y+3)2=25 is the equation of the circle.

## What is the equation of a circle with center 4 7 and radius 6?

(x + 4)2 + (y – 7)2 = 6.

## Which point lies on the circle that has a center at (- 2 3 and a radius of 4?

The radius of the circle is 4, so any point that is 4 units away from the point (-2,3) would be considered a correct answer.

## Is the point (- 3/5 inside outside or on the circle with equation?

Therefore, the given point lies outside the circle.

## Does the point (- 3 2 lie inside outside or on a circle with center 4 0 and radius 5 units?

Answer: The point (-3, 2) lies outside of the circle centered at (4, 0) with radius 5. Since 7.28 > 5, the point (-3, 2) lies outside of the circle centered at (4, 0) with radius 5.

## What is the radius of the circle with the equation x2 y2 25?

The center of the circle is at (0,0) and, when x = 0, the circle points are at y=−5 and y=5 . So, the radius of the circle is r = 5.

## What is the diameter of the circle whose equation is x2 y2 25?

The equation given corresponds to r=5 . Since the diameter is twice the radius, the diameter is 10.