1. **State the problem:** Convert 45 meters to centimeters. 2. **Formula and rules:** We know that 1 meter equals 100 centimeters. So, to convert meters to centimeters, multiply the number of meters by 100. 3. **Calculation:** $$45 \text{ meters} \times 100 = 4500 \text{ centimeters}$$ 4. **Explanation:** Since each meter contains 100 centimeters, multiplying 45 by 100 gives the equivalent length in centimeters. **Final answer:** 4500 centimeters.