What is the length and width of a rectangle if the area is 108 square centimeters?

Without any further information regarding the rectangle, any two numbers that multiply to get 108 will suffice:

1cm x 108cm

2cm x 58cm

3cm x 36cm

4cm x 27cm

6cm x 18cm

9cm x 12cm

Plus if the sides are allowed to not be whole numbers, there are many, many more. For example:

10cm x 10.8cm

5cm x 21.6cm