Answer :
c.
The front of the box is a rectangle, with a width (or length in this case) and height. The area of the square (surface area of the front of the box) is found by multiplying the width and height.
The front of the box is a rectangle, with a width (or length in this case) and height. The area of the square (surface area of the front of the box) is found by multiplying the width and height.