Using the Diameter Calculator. You can change your choices at any time by visiting Your Privacy Controls. Area of 8 inch circle calculator is used to calculate the area of a circle with diamater of 8 inches. Radius: Diameter: Circumference: Area: For help with using this calculator, see the shape area help page. A = Circle area; π = Pi = 3.14159… ø = Circle diameter; Diameter of Circle. We can also use the A = 1/4πd2 formula where d is the diameter. So the area of the said circle is A=16 pi. Privacy | Radius: Diameter: Circumference: Area: For help with using this calculator, see the shape area help page. No. The diameter is always twice the radius, so either form of the equation works. The radius can be any measurement of length. 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. Measure the diameter of your circle in feet. Area = 3.1416 x r 2. It may come in handy. If the diameter is 8 inches of a circle the area is 16pi inches squared or 50.24 inches squared. The circumference of a circle can be defined as the distance around the circle, or the length of a circuit along the circle. Claude Irwin Palmer Library of Practical Electricity: Practical Mathematics For Home Study (New York: McGraw-Hill Book Company, Inc., 1919) 159. Assuming 8 inches is the circumference, the area is 4/pi square inches… The radius of the second circle is about 3 inches longer. To begin with, remember that pi is an irrational number written with the symbol π. π is roughly equal to 3.14. Every pattern on our site is available in a convenient bundle starting at only $19.99. Enter the radius, diameter, circumference or area of a Circle to find the other three. The circumference of a circle is the diameter x 3.1416. Ans: Diameter of circle = 8 inches so radius of circle = 4 inches now area = π r^2 =3.14× 4×4 = 3.14×16 = 50.24 square inches Enter the area contained within a circle. ... area = Pi * radius 2 Enter either the radius or the diameter. find the area of each circle. This depends. We also offer an option at $49.99 for commercial use that includes SVG files. Is 8 inches the diameter, radius, or circumference of the circle? Downloads. Area of a Circle area = Pi * radius 2 Enter either the radius or the diameter. To calculate what is the area of a 8 inch diameter circle, use the formla of A = πr2, where r is the radius. Assuming 8 inches is the circumference, the area is 4/pi square inches… 1024 ×1018, 22.8 KiB. The circle is the three-dimensional object with no edges. It doesn't matter whether you want to find the area of a circle using diameter or radius - you'll need to use this constant in almost every case. Area of a circle: A = πr 2 This formula reads, “Area equals pi are squared.” Diameter of Circle. The radius of the third circle is about 1 inch longer than the previous . Free printable 8 inch circle pattern. If the diameter is 18 then the radius r=9 so the area is: pi r^2 = 81 pi ~= 254.469 The area of a circle is given by the formula pi r^2 where r is the radius. Online Calculators > Math Calculators > Area of 8 Inch Circle Area of 8 Inch Circle. Find out more about how we use your information in our Privacy Policy and Cookie Policy. Symbols. Using this calculator, we will understand methods of how to find the perimeter and area of a circle. Area of Circle. The diameter of a circle is the length of a straight line drawn between two points on a circle where the line also passes through the centre of a circle, or any two points on the circle as long as they are exactly 180 degrees apart. The area of a circle is: π times the Radius squared: A = π r 2. or, when you know the Diameter: A = (π /4) × D 2. or, when you know the Circumference: A = C 2 / 4 π. Here are my steps: Note: Formula for Area of a Circle is Area equals Pi times Radius times Radius. Area = π * (Diameter / 2)2 Diameter of a Circle The diameter of a circle is the distance from one edge to the other, passing through the center. This gives you your square feet figure (ft 2). TIFF (full resolution) 2400 ×2386, 194.8 KiB. Return to the Shape Area section. Check out our new project at CraftStarters.com where we offer digital crafting supplies including digital stamps, patterns, and more. We and our partners will store and/or access information on your device through the use of cookies and similar technologies, to display personalised ads and content, for ad and content measurement, audience insights and product development. This is the diameter of a circle that corresponds to the specified area. Example: find the area of a rectangle. Area of a Circle Formula The area of a circle is pi times the square of its radius. The formula for the area of a square given its radius is A=pi. The following area of a circle calculator will help you find the area of any circle when the radius is given. Galleries Circles. This free area calculator determines the area of a number of common shapes using both metric units and US customary units of length, including rectangle, triangle, trapezoid, circle, sector, ellipse, and parallelogram. Enter the diameter of a circle. Area = 3.1416 x r 2 The radius can be any measurement of length. To find area from the circle's diameter: a = \pi (d/2)^2. The area of an oval is the longest diameter x the shortest x 0.7854. Using Radius to Find Area Identify the radius of a circle. The diameter of a circle is 8 inches. Circumference of a circle: C = πd = 2πr The d represents the measure of the diameter, and r represents the measure of the radius. 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