Circle with Area 12.8679 Square Inches

Instant diameter calculation and visualization

Diameter

4.0477 inches

Radius

2.0239 inches

Circumference

12.7162 inches

Area

12.8679 in²

How to Calculate Circle Diameter from Area

Step-by-Step Solution

  1. Start with the circle area formula: A = πr²
  2. Solve for radius: r = √(A/π)
  3. Calculate diameter: d = 2r
r = √(12.8679/π) = 2.0239 inches
d = 2 × 2.0239 = 4.0477 inches

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