\( \begin{array}{ll}\text { A } & (5 \times 4)+(3 \times 4) \\ \text { B } & (5 \times 4) \times(3 \times 4) \\ \text { C } & 4 \times(5 \times 3) \\ \text { (D) } & 5 \times(3 \times 4)\end{array} \)

Did you know that the expression for area can be calculated in multiple ways? For instance, expressions like \( (5 \times 4) + (3 \times 4) \) and \( 5 \times (3 \times 4) \) might both represent unique arrangements within the same overall space! Understanding these formulations can help in visualizing geometric problems in a playground of calculations. To aid in simplifying your calculations, always look for common factors. For instance, in the expression \( (5 \times 4) + (3 \times 4) \), you can factor out the 4, making it easier to compute: this gives \( 4 \times (5 + 3) \). This can save time and reduce errors, particularly in more complex mathematics where precision is key!