a)Let d be the distance around the track (in kilometers). Write an equation that can be used to find d . First choose an appropriate form. Then fill in the blanks with the letter d and the numbers 4 and 9.6.

To find the distance around the track (d) using an appropriate form, we can use the formula for the circumference of a circle, which is:

\[ C = 2\pi r \]

However, since you're providing specific numbers here (4 and 9.6) without any additional context, it seems you might want an equation in a form that includes these numbers.

Let’s consider:

• If we assume that 4 is the number of laps around the track and 9.6 is the total distance in kilometers, we can express this relationship as follows:

\[ d = 4 \times 9.6 \]

So, the equation that can be used to find \(d\) would be:

\[ d = 4 \cdot 9.6 \]

Now, we can calculate \(d\):

\[ d = 4 \cdot 9.6 = 38.4 \text{ kilometers} \]

Thus, \(d = 38.4\) kilometers.