Circle with Area 309.8771 Square Inches

Instant diameter calculation and visualization

Diameter

19.8632 inches

Radius

9.9316 inches

Circumference

62.4022 inches

Area

309.8771 in²

How to Calculate Circle Diameter from Area

Step-by-Step Solution

Start with the circle area formula: A = πr²
Solve for radius: r = √(A/π)
Calculate diameter: d = 2r


                            r = √(309.8771/π) = 9.9316 inches

                            d = 2 × 9.9316 = 19.8632 inches

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