Step-by-Step Solution
- Start with the circle area formula: A = πr²
- Solve for radius: r = √(A/π)
- Calculate diameter: d = 2r
r = √(81.0916/π) = 5.0806 inches
d = 2 × 5.0806 = 10.1612 inches
Instant diameter calculation and visualization
r = √(81.0916/π) = 5.0806 inches
d = 2 × 5.0806 = 10.1612 inches