Final answer:
The mass of a wooden toy block with a volume of 24 cm³ and a density of 0.7 g/cm³ is calculated by multiplying the volume by the density, yielding 16.8 grams.
Step-by-step explanation:
The question asks for the mass of a wooden toy block given its dimensions and density. To determine the mass, we use the formula of density which is mass divided by volume. The volume of the block is found by multiplying its dimensions (length × width × height), which gives us 4 cm x 3 cm x 2 cm = 24 cm³.
The density of the block is 0.7 g/cm³, so its mass can be calculated by multiplying the density with the volume. Therefore, the mass is 0.7 g/cm³ x 24 cm³ = 16.8 grams.