Answer: To solve this problem, we can use the formula for the area of a parallelogram:
Area = Base × Height
In this case, the base of the parallelogram is given as 300 meters, and the perpendicular distance between the base and its opposite side is given as 120 meters.
Let's label the base as 'b' and the height as 'h'. We can see that the height is the perpendicular distance between the base and its opposite side.
So, we have:
Base (b) = 300 meters
Height (h) = 120 meters
Using the formula for the area of a parallelogram, we can substitute the values:
Area = b × h
Area = 300 meters × 120 meters
Area = 36,000 square meters
Therefore, the area of the rice field in the shape of a parallelogram is 36,000 square meters.