How do you find the area of a circle with the circumference?

How to find the area of a circle from the circumference?

1. Divide the circumference by π.
2. Divide the result by 2 to get the circle’s radius.
3. Multiply the radius by itself to get its square.
4. Multiply the square by π, or 3.14 for an estimation.
5. You found the circle’s area from the circumference.

How do you find the CF of a circle?

What Are All Circle Formulas?

1. The diameter of a Circle D = 2 × r.
2. Circumference of a Circle C = 2 × π × r.
3. Area of a Circle A = π × r2

Are circumference and area of a circle the same?

Circumference of circle: The distance around the circular region is called its circumference. The ratio of circumference of any circle to its diameter is constant. Area of circle: The measure of the region enclosed inside the circle is called its area.

What is circle area?

The area of a circle is the space occupied by the circle in a two-dimensional plane. The formula for the area of a circle is A = πr2, where r is the radius of the circle. The unit of area is the square unit, for example, m2, cm2, in2, etc. Area of Circle = πr2 or πd2/4 in square units, where (Pi) π = 22/7 or 3.14.

What is the area of circumference?

The area of a circle is given by the formula A = π r2, where A is the area and r is the radius. The circumference of a circle is C = 2 π r. If we “solve for r” in the second equation, we have r = C / (2 π ). Now we use this to replace r in the first equation: A = π [ C / (2 π ) ]2.

How do you find area with radius?

The area of a circle is pi times the radius squared (A = π r²).

What is the area and circumference of circle calculator?

Area = 201.1429 in² Area and circumference of circle calculator uses radius length of a circle, and calculates the perimeter and area of the circle. It is an online Geometry tool requires radius length of a circle. Using this calculator, we will understand methods of how to find the perimeter and area of a circle.

How do you find the radius of a circle in math?

How do I find the radius from the circumference? To find the radius from the circumference of a circle, you have to do the following: Divide the circumference by π, or 3.14 for an estimation. The result is the circle’s diameter. Divide the diameter by 2. There you go, you found the circle’s radius.

How do you find the circumference of a circle using PI?

Given the radius or diameter and pi you can calculate the circumference. The diameter is the distance from one side of the circle to the other at its widest points. The diameter will always pass through the center of the circle. The radius is half of this distance.

What is the diameter of a circle in meters?

A circle has a diameter of 2 meters. What is its circumference? If a circle has a area of 3.142 square meters. What is its perimeter?