Functions Four Corners Cut Off

Four identical squares are cut from the corners of a piece of blue paper measuring 8 cm by 8 cm. The side length of one the squares cut off is p cm. What are the valid values of p? Create a function A(p) that maps the value of p shown on the slider to the Area Remaining, remember to state the domain with the function. Graph the function for values of p in the domain. State the range of the function.