The Lesson
The area that a circle is uncovered using the formula:

Interactive Widget
Use this interaction widget to attract a circle and then calculate its area indigenous the diameter. Start by clicking in the shaded area.You are watching: Area of circle with diameter of 10
How to uncover the Area the a Circle using the Diameter
Finding the area of a circle utilizing the diameter is easy.Question
What is the area the a circle v a diameter that 10 cm, as displayed below?
Area = π × 102⁄4
Area = π × 10 × 10 ÷ 4
Area = π × 100 ÷ 4
Area = π × 25
Area = 3.14 × 25
Area = 78.5 cm2
Lesson Slides
The slider below shows an additional real instance of exactly how to uncover the area of a circle utilizing the diameter.Open the slider in a new tabHow to uncover the Area that a Circle making use of the Radius
The area that a circle deserve to be discovered using the radius rather than the diameter.The area of a circle, making use of the radius, is uncovered using the formula:

What Is a Circle?
A one is a form containing a set of points that are all the same distance indigenous a provided point, its center.Why walk This Formula Work?
The formula for the area that a circle is better known in terms of the radius:



A keep in mind on Units
The area of a circle is a length times a length, so us say its dimension is length2. (All areas are lengths squared).This affect the devices used. If the diameter is in cm, the area is in cm2. If that is in inches, the area is in inches2.See more: 7 Zip Codes In Upper East Side Ny Zip Codes, Upper East Side, Ny New York, Ny Neighborhood
Help united state To boost Mathematics MonsterDo girlfriend disagree through something on this page?Did you spot a typo?Please tell united state using this form