Final answer:
The number of firebenders required depends on the strength of each individual, the size and weight of the door, and the friction coefficient.
Step-by-step explanation:
The number of firebenders required to open the door to Avatar Roku's statue depends on several factors:
- The strength of each individual firebender
- The size and weight of the door
- The friction coefficient between the door and the floor
Assuming the door is too heavy to be opened by one firebender alone, a team of firebenders would need to coordinate their efforts to generate enough force to overcome the weight and friction of the door.
Without more specific information, it is difficult to give an exact number of firebenders needed, but it would likely require several firebenders working together.