Step-by-Step Solution
- Start with the circle area formula: A = πr²
- Solve for radius: r = √(A/π)
- Calculate diameter: d = 2r
r = √(66.8536/π) = 4.613 inches
d = 2 × 4.613 = 9.2261 inches
Instant diameter calculation and visualization
r = √(66.8536/π) = 4.613 inches
d = 2 × 4.613 = 9.2261 inches