Answer:
0.4444 g/cm³ ≅ 0.44 g/cm³ (2 significant figures).
Step-by-step explanation:
d = m/V,
where, d is the density of the material (g/cm³).
m is the mass of the material (m = 28 g).
V is the volume of the material (V = 63.0 cm³).
∴ d = m/V = (28 g)/(63.0 cm³) = 0.4444 g/cm³ ≅ 0.44 g/cm³ (2 significant figures).