1. Problem: Convert 1 millennium to seconds. Given: 1 millennium = 1000 years Required: seconds 2. Formula: 1 year = 365 days (ignoring leap years for simplicity), 1 day = 24 hours, 1 hour = 3600 seconds 3. Calculation: $$\text{Seconds} = 1000 \times 365 \times 24 \times 3600$$ 4. Simplify: $$= 1000 \times 365 \times 86400$$ $$= 31,536,000,000 \text{ seconds}$$ 5. Explanation: We multiply the number of years by days per year, hours per day, and seconds per hour to get total seconds. --- 1. Problem: Convert 1 century to seconds. Given: 1 century = 100 years Required: seconds 2. Using the same formula as above: $$\text{Seconds} = 100 \times 365 \times 24 \times 3600$$ 3. Simplify: $$= 100 \times 365 \times 86400$$ $$= 3,153,600,000 \text{ seconds}$$ 4. Explanation: Similar to the millennium conversion, multiply years by days, hours, and seconds. These problems demonstrate how to convert large time units into seconds by breaking down the units step-by-step.