1. Convert everything to the same unit:

* Since 1 meter = 100 centimeters, 1.8 meters is equal to 1.8 * 100 = 180 centimeters.

2. Multiply:

* 180 cm * 45 cm = 8100 cm²

Answer: The result of 1.8 meters times 45 cm is 8100 square centimeters (cm²).