A = 4624π in² and A ≈ 14519.36 in²
The area (A) of a circle is
A = πr² ( r is the radius )
here diameter = 136 ⇒ r = [tex]\frac{136}{2}[/tex] = 68 in
A = π × 68² = 4624π in² ( exact value )
using π ≈ 3.14
A = 3.14 × 68² ≈ 14519.36 in² ( approximate value )