Final answer:
The length of the rectangular field is 14 meters.
Step-by-step explanation:
To find the length of the rectangular field, we can use the formula:
Area = Length x Breadth
Given that the area is 126 square meters and the breadth is 9 meters, we can rearrange the formula as:
Length = Area / Breadth
Substituting the given values, we have:
Length = 126 square meters / 9 meters = 14 meters
Therefore, the length of the field is 14 meters.