Before contracting to grind engine cylinders to a cross-sectional area of 12 in, you need to know how much deviation from the ideal cylinder diameter of c = 3.909 in you can allow and still have the area come within 0.02 in of the required 12 in2. To find out, you let A = It and look for the interval in which you must hold x to make |A - 12| 0.02. What interval do you find? To what interval must x be held to meet the requirements for the area? inches (Type your answer in interval notation. Round the left endpoint up and the right endpoint down to the nearest thousandth as needed.)