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The formula to calculate the area of a circle using radius is as follows: Area of a circle = π × r 2. And, to calculate the area of a circle using diameter use the following equation: Area of a circle = π × (d/2) 2. where: π is approximately equal to 3.14.
Learn how to calculate the area of a circle using the formula A = π r2 or A = (π/4) × D2. Use the online calculator to find the area, radius, diameter or circumference of a circle.
Calculate the area of a circle using its radius or diameter in various units. Learn the formula, examples and practical applications of circle geometry.
Learn how to calculate the area of a circle using the formula A = πr2, where r is the radius. See the derivation of the formula using rectangles and triangles, and examples of real-life applications of circles.
- The area of circle is the region occupied by circle in the two-dimensional space.
- The area of circle can be calculated by using the formulas: Area = π x r 2 , in terms of radius ‘r’. Area = (π/4) x d 2 , in terms of diameter, ‘...
- The perimeter of circle is nothing but the circumference, which is equal to twice of product of pi (π) and radius of circle, i.e., 2πr.
- Given, r = 3 cm. We know that the area of circle is πr 2 square units Hence, A = π x 3 2 = 9π cm 2 .
- We know that the circumference of a circle is 2πr units. Hence, C = 2π(14) = 28π cm.
- We know that, Area of a circle = πr 2 square units Hence, 340 =3.14 r 2 Hence, r 2 = 340/3.14 r 2 = 108.28 Hence, r = 10.4 cm. Hence, radius o...
- We know that, Area = πr 2 A = π(6) 2 A = 36π Hence, the area of a circle is 36π, if the radius is 6 cm.
- The area of a circle is 1303.8 square inches if its circumference is 128 inches.
Learn how to calculate the area of a circle using the formula A = πr 2 or A = (π/4)d 2, where r is the radius and d is the diameter. See the derivation, real-world examples, and differences between area and circumference of a circle.
Learn how to calculate the area of a circle using the formula A = πr2, where r is the radius and π is the constant ratio of the circumference to the diameter. Explore the history, proofs, and properties of this geometric formula.
Aug 3, 2023 · The area of a circle is the space occupied by the circle in a two-dimensional plane. It is expressed in square units such as m 2 , cm 2 , etc. The shaded region below shows the area of the circle.
