How To Find Area Of A Circle

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Area of a circle formula with radius and diameter

Area Of A Circle Formula With Radius And Diameter

Area of a circle is the region occupied by the circle in a two dimensional plane It can be determined easily using a formula A r2 Pi r squared where r is the radius of the circle The unit of area is the square unit such as m2 cm2 The area of a circle is pi times the radius squared (A = π r²). Learn how to use this formula to find the area of a circle when given the diameter. Created by Sal Khan and Monterey Institute for Technology and Education.

How to calculate perimeter or circumference of circle in java example

How To Calculate Perimeter Or Circumference Of Circle In Java Example

How To Find Area Of A CircleThe area of a circle is: π ( Pi) times the Radius squared: A = π r2. or, when you know the Diameter: A = (π/4) × D2. or, when you know the Circumference: A = C2 / 4π. Example: What is the area of a circle with radius of 3 m ? Radius = r = 3. Area = π r2. = π × 32. = 3.14159. × (3 × 3) = 28.27 m2 (to 2 decimal places) How to Remember? You can find the diameter of a circle by multiplying the radius of a circle by two Diameter 2 Radius The formula to calculate the area of a circle using radius is as follows Area of a circle r 2 And to calculate the area of a circle using diameter use the following equation Area of a circle d 2 2 where