Answer:
4 cm²
Explanation:
[tex]\begin{array}{rcl}\\P &= &\dfrac{F}{A}\\\\\dfrac{\text{4 kg}}{A} &=& \dfrac{\text{0.25 kg}}{\text{1 cm}^{2}}\\\\\dfrac{\text{4 cm}^{2}}{A} &=& 0.25\\\\\text{4 cm}^{2} &= &0.25A\\A & = & \textbf{16 cm}^{\mathbf{2}}\\\end{array}[/tex]
This is the total area of the cat's four feet, so the area of one foot is 4 cm².