The length of a side of a square is $5x+2$ units. If the perimeter is $48$ units, complete the following.  

1. Write an equation to represent this information.

   Hint (a):

   To find the perimeter, add the side lengths. In this case we have a square which has four equal side lengths.

   Answer (a):

   One possibility is $4(5x+2)=48$.

2. Solve for $x$.

   Answer (b):

   $x=2$

3. What is the area of the square?

   Hint (c):

   Remember to substitute $x=2$ back into the original equation.