Answer:
75
Step-by-step explanation:
volume of box = LWH = 5 cm * 5 cm * 3 cm = 75 cm^3
volume of a 1-cm cube = LWH = 1 cm * 1 cm * 1 cm = 1 cm^3
number of 1-cm cubes that fit in box = (volume of box)/(volume of 1-cm cube)
number = (75 cm^3)/(1 cm^3) = 75
Answer: 75
