#### Find equation of a circle with diameter endpoints

## Is there a diameter with endpoints?

The diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints are on the circumference of the circle. The given end points of the diameter are (−3,8) and (7,6) . Use the midpoint formula to find the midpoint of the line segment.

## How do you find the area of a circle with endpoints?

We need to determine the area of the circle whose diameter has endpoints (2,7) and (-4,-1). First we will use the formula of the area . We know that: A = r^2 * pi where A is the area, and r is the radius of the circle.

## How do you find the radius with the diameter?

Just remember to divide the diameter by two to get the radius. If you were asked to find the radius instead of the diameter, you would simply divide 7 feet by 2 because the radius is one-half the measure of the diameter. The radius of the circle is 3.5 feet.

## How do you find the radius of a circle with the center?

The center-radius form of the circle equation is in the format (x – h)^{2} + (y – k)^{2} = r^{2}, with the center being at the point (h, k) and the radius being “r”.

## What is the standard equation of a circle?

First you need to know that the equation for a circle is (x-a)^2 + (y-b)^2 = r^2 where the center is at point (a,b) and the radius is r.

## What are the endpoints of a circle?

The distance from a circle’s center to a point on the circle is called the radius of the circle. A radius is a line segment with one endpoint at the center of the circle and the other endpoint on the circle. A diameter is a chord that passes through the center of the circle.

## What is the equation of a circle calculator?

How to Use the Equation of a Circle Calculator?Step 1: Enter the circle centre and radius in the respective input field.Step 2: Now click the button “Find Equation of Circle” to get the equation.Step 3: Finally, the equation of a circle of a given input will be displayed in the new window.

## What is the diameter of the radius is 1?

Radius, Diameter and Circumference The Circumference is the distance once around the circle. And here is the really cool thing: When we divide the circumference by the diameter we get 3.141592654 So when the diameter is 1, the circumference is 3.141592654

## Is a radius half the diameter?

The radius is half the diameter, or . The diameter of this circle is 36 feet, so the radius is feet. The radius is 18 feet. The distance around a circle is called the circumference.