Final answer:
The calculation of the total length of candy requires the number of bags purchased. If each bag is 200 meters long, the total length is the number of bags multiplied by 200 meters. Without the number of bags, the exact total cannot be provided.
Step-by-step explanation:
The information provided in the question is not entirely clear, and it seems to be incomplete regarding the exact quantity related to 'the class in exercise 18'. However, if we make the assumption that the question is asking to calculate the total length of candy if each bag of candy is 200 meters long, and we knew the number of bags, the solution would be straightforward.
Assuming that the class is buying n bags of candy, the total length of candy, L, would be calculated as:
- L = number of bags (n) × length of each bag (200m)
Therefore, without the exact number of bags (n), I cannot provide a precise answer. If the student can provide the number of bags purchased by the class, the total length of candy would be n × 200 meters.