Final answer:
Tyler would need to climb approximately 480 stairs if each stair is an average of 18 cm tall.
Step-by-step explanation:
To calculate the number of stairs Tyler must climb, we need to know the height he wishes to reach. If we assume that each stair is an average of 18 cm tall, we can divide the desired height by the height of each stair to find the total number of stairs. Let's assume that Tyler wants to reach a height of 8642 cm. Dividing 8642 cm by 18 cm gives us approximately 480 stairs. Therefore, Tyler would need to climb approximately 480 stairs.