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

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

Explanation: The equation of a circle is (x−h)2+(y−k)2=r2 , where (h,k) is the center and r is the radius. If the center is at (−3,0) and the endpoint of the radius is at (3,0) , then the length of the radius is the distance between the two points, which is 3−(−3)=6 .

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

Explanation: The eqn. of a circle with centre (h,k) and radius r is given by, (x−h)2+(y−k)2=r2 .

## What is the equation of a circle with center?

The equation of a circle with center (h,k) and radius r units is (x−h)2+(y−k)2=r2 .

## What is the equation of the circle whose Centre is and radius is 7?

(x−3)2+(y+1)2=7.

## What will be the equation of a circle?

We know that the general equation for a circle is ( x – h )^2 + ( y – k )^2 = r^2, where ( h, k ) is the center and r is the radius. So add 21 to both sides to get the constant term to the righthand side of the equation. Then complete the square for the y terms.

## Which equation represents a circle whose center is the origin?

Which equation represents a circle with the same center as the circle shown but with a radius of 2 units? In the diagram, a circle centered at the origin, a right triangle, and the Pythagorean theorem are used to derive the equation of a circle, x2 + y2 = r2.

## Does the point (- 2.5 3.5 lie inside outside or on the circle?

The equation of the given circle is x2 + y2 = 25. Since the distance between point (–2.5, 3.5) and centre (0, 0) of the circle is less than the radius of the circle, point (–2.5, 3.5) lies inside the circle.

## Does the point 3.5 lie inside?

Answer: As geometrically it is easy to see the point lies inside the circle since radius of this circle is 7 units. (-3.5)2 + (4.5)2 =12.25 + 20.25 = 32.5 Which is less than the RHS = 49 Therefore, the point lies inside the circle.

## Does the point lie inside or outside the circle?

If the distance is greater than the radius, the point lies outside. If it’s equal to the radius, the point lies on the circle. And if it’s less than the radius, you guessed it right, the point will lie inside the circle.

## Does the Point 2/3 lie on the graph?

1 Answer. On putting x = 2 and y = 3 in given solution. Also, (2, 3) is the solution of 5x + (1- 2a) y = 3b. Hence, the value of b is 1 / 3.

## Does the Point 2/3 lie on line of graph of 3x 2y 6?

Given equation is 3x + 2y – 6 = 0. ≠ R.H.S. ∴ Point A does not lie on the given line.

## What are the center and radius of a circle whose equation is XA 2 +( Yb 2 C?

Thus the circle has center and radius . Therefore, the answer is D. ccooley wrote: MathRevolution wrote: (x-a)^2 + (y-b)^2 = r^2 is the equation of a circle with radius r and center (a,b).

## What is the radius of a circle whose equation is x2 y2 10x 6y?

Answer: The radius of the given circle is 4 units.

## Which point is on the circle centered at the origin with a radius of 5 units distance formula?

Which point is on the circle centered at the origin with a radius of 5 units? Distance formula: StartRoot (x 2 minus x 1) squared + (y 2 minus y 1) squared EndRoot. A.

## What is the radius of a circle whose equation is x2 y2 8x − 6y 21 0 Brainly?

Answer: The radius is 2 units.