Final answer:
The density of the object is 4 grams per cubic centimeter (g/cm3), calculated by dividing the mass (180 grams) by the volume (45 cm3).
Step-by-step explanation:
The density of an object is determined by dividing its mass by its volume. Given that we have a mass of 180 grams and a volume of 45 cm3, the density can be calculated by using the formula:
Density = Mass / Volume
Density = 180 g / 45 cm3 = 4 g/cm3
Therefore, the density of the object is 4 grams per cubic centimeter (g/cm3).