Chapter 3 - Solving Inequalities - 3-7 Absolute Value Equations and Inequalities - Practice and Problem-Solving Exercises - Page 212: 75

89.992≤d≤90.008

Let d be the actual diameter of a piston in mm The difference between the actual & ideal diameter is at most 0.008 |d-90000|≤0.008 => d-90000≤0.008 and d-90000≥-0.008 => d ≤90000.008 and d≥89999.992 or 89999.992≤d≤90000.008