Answer:
18 inch
Explanation:
In a full rotation, a wheel covers its full perimeter(circumference). Let the diameter be d.
=> circumference = 57 inch
=> πd = 57 inch
=> (22/7) d = 57 inch.
=> d = (57 * 7)/22 inch
=> d ≈ 18.13 inch
=> d = 18 inch (nearest inch)