Respuesta :
In a store, perhaps. People want it to be easy to shop, so it would be best for say, a top ramen package to be the same net weight as all the other top ramen packages. This makes it 1) easy to label and 2) easy to be confident buying, as it is exactly the same as all the others.
Sometimes when home builders are building a home, they need to have 2 or more congruent shapes, because is some shapes weren't congruent the house would probably be falling down lol. Or it wouldn't look right.. I hope this answer helped you.. :)