Final answer:
The mass of the rectangular block of aluminum measuring 11.1 cm by 22.2 cm by 34.5 cm is approximately 22.78 kg.
Step-by-step explanation:
To find the mass of the aluminum block, we can use the formula:
mass = density * volume
Given that the density of aluminum is 2.70 g/cm³ and the dimensions of the block are 11.1 cm by 22.2 cm by 34.5 cm, we can calculate the volume as:
volume = length * width * height
Substituting the values, we get:
volume = 11.1 cm * 22.2 cm * 34.5 cm = 8435.53 cm³
Finally, we can calculate the mass:
mass = 2.70 g/cm³ * 8435.53 cm³ = 22779.53 g = 22.78 kg
Therefore, the mass of the rectangular block of aluminum is approximately 22.78 kg.