The cow can graze in the total area of the barn, that is, in 1800m²
To calculate the area that the cow has available to graze, we must take into account the following data:
According to the above, we must find the area of circumference that the cow tied with the 50m rope can graze.
On the other hand, we find the area of the barn:
According to the above and the graph, it can be inferred that the cow has the ability to graze in the entire barn area.
Learn more about area in: https://brainly.com/question/16151549