Circle with Area 39.9479 Square Inches

Instant diameter calculation and visualization

Diameter

7.1318 inches

Radius

3.5659 inches

Circumference

22.4054 inches

Area

39.9479 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 = √(39.9479/π) = 3.5659 inches

                            d = 2 × 3.5659 = 7.1318 inches

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