Final answer:
The volume of the demo bench in front of the lecture hall, with dimensions 1.834m x 0.905m x 0.670m, is approximately 1117489.7 L.
Step-by-step explanation:
The volume of the demo bench in front of the lecture hall can be calculated by multiplying its length, width, and height. The dimensions given are 1.834m x 0.905m x 0.670m. To convert these measurements to liters, we need to multiply them by the conversion factor, 1000 cm³ = 1 L.
So, the volume of the demo bench is 1834 cm x 905 cm x 670 cm = 1117489700 cm³. Converting to liters, we divide by 1000: 1117489700 cm³ ÷ 1000 = 1117489.7 L. Rounded to three significant figures, the volume of the demo bench is approximately 1117489.7 L.