The length of the rectangular section is 70m, the width is 40m. 1/5 of the area is planted with cabbage. What area is occupied by cabbage.

This task can be solved very easily. First, we need to find the entire area. It is found by the formula: S = ab, where a is the length and it is equal by condition to 70 m, b is the width, it is 40 m, which means S = 70 × 40 = 2800 m ^ 2
Then we are 2800 ÷ 5 = 560 – this is one part, and since we need to find 1/5 of the area, we get 560.
Answer: 560