Yes it is. In any rectangle, by definition the diagonal cross section will always be longer than the longest side. Therefore given that this is a relatively 2d shape in 3 dimensional space, it will be able to pass through the hole.
Depends. The cover is resting on the inside lip which prevents moisture getting in. Ie. this cover is actually significantly bigger than the hole it’s covering.
Eg. if this cover is 25x25, but it’s covering a hole which is less than 18x18 (c=25.5), it’ll be quite hard to drop the cover in.
I think you’re misunderstanding. Yes, it cannot fit in when it’s angled properly to fit into the hole. However, if you angle the plate 45 degrees and lift one end of the plate, it will fall into the diagonally. That’s why manholes are round shaped. There is no angle for a round cover to fall into the hole itself.
That’s not how geometry works
Yes it is. In any rectangle, by definition the diagonal cross section will always be longer than the longest side. Therefore given that this is a relatively 2d shape in 3 dimensional space, it will be able to pass through the hole.
Depends. The cover is resting on the inside lip which prevents moisture getting in. Ie. this cover is actually significantly bigger than the hole it’s covering.
Eg. if this cover is 25x25, but it’s covering a hole which is less than 18x18 (c=25.5), it’ll be quite hard to drop the cover in.
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The problem is the hole is smaller than the cover. If they were the same size it would fall though
I think you’re misunderstanding. Yes, it cannot fit in when it’s angled properly to fit into the hole. However, if you angle the plate 45 degrees and lift one end of the plate, it will fall into the diagonally. That’s why manholes are round shaped. There is no angle for a round cover to fall into the hole itself.
You are right, never mind. I was thinking Pythagorean theorem
Yes it is