Let us say that:
d = density
v = volume
m = mass
l, w, h are the dimensions of the block
To solve this problem, we must remember that density is the ratio of mass and volume, that is:
d = m / v
Now let us first calculate for the volume using the formula:
V = l * w * h
V = 12 cm * 3.33 cm * 4.2 cm
V = 167.832 cm^3
Now we can calculate for the density of the wood block:
d = 97.5 g / 167.832 cm^3
d = 0.58 g / cm^3 (ANSWER)