David is helping his father build a rectangular pen to keep their goat from getting lost. The pen will be 24 meters long ,20 meters wide and have fence post do they needed?

Answer 1

I guess that would depend on how far apart the posts are, right?
Assuming that distance is a divisor of both 20 and 24, it will probably be 4m.
If so, they will need 2(20/4 + 24/4) posts.