Oh, dude, a ruler is 15 because... well, it's not. A standard ruler is actually 12 inches long. Maybe you measured it wrong or got a funky ruler from a parallel universe where rulers are longer. But hey, who am I to judge? Keep on measuring, my friend.
Chat with our AI personalities
23mm is about 9/10 of an inch. That's about halfway between 7/8 and 15/16
A WOOD RULER A STONE RULER A IRON RULER A DIAMOND RULER A EMERALD RULER
My ruler is not that accurate, but it looks like 15/16 to me.
The old Imperial ruler was one foot long. To enable pupils to carry one in their "pencil box", a version that was half as long was introduced. 1 foot = 30.48 cm so rulers are graduated to 30 cm or half that length (= 15 cm).
15 cm. You just need to measure it. don't you have a ruler? No offense or anything. Hope this helps!