The surface area of a cube is calculated using the formula Surface Area=6a2\text{Surface Area}=6a^2Surface Area=6a2, where aaa is the side length of the cube. For Chelsea's cube with a side length of 4 cm, the surface area is:
6×42=6×16=96 cm26\times 4^2=6\times 16=96\text{ cm}^26×42=6×16=96 cm2
So, the surface area of Chelsea's cube is 96 cm².
