A landscaping company is designing a square plot for a client.
The side of the plot is given by the expression: \((a^2 - a+3)\) \(m\).
Then, answer the following questions.
1. Express the area of the square plot using algebraic expression.
2. Which among the following represent the area of the square in polynomial form.
3. If \(a = 4\), find the numerical value of area of the square plot in \(m^2\).
4. If the side is enlarged by 4 times, then what will be the new side length?