Final answer:
The area of the square inscribed in a full circle is 4 cm².
Step-by-step explanation:
To find the area of the square inscribed in a full circle, we can use the relationship between the area of the square and the area of the semicircle. If the area of the square inscribed in the semicircle is 2 cm², then the area of the square inscribed in the full circle would be 4 cm².
This is because the area of the semicircle is half the area of the full circle, so if the area of the square in the semicircle is 2 cm², the area of the square in the full circle would be double that, which is 4 cm².