Circle with Area 391.3415 Square Inches

Instant diameter calculation and visualization

Diameter

22.322 inches

Radius

11.161 inches

Circumference

70.1266 inches

Area

391.3415 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 = √(391.3415/π) = 11.161 inches

                            d = 2 × 11.161 = 22.322 inches

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