No, it means inches.
18 inches tall
18 feet
48 feet
A truuk would be the size of a 18 feet tall
18 meters is just under 60 feet.
Some people think he's 15 feet tall not true if Bumblebee is 18 feet tall he would look much taller then Sideswipe which he does not plus Sideswipe stands on his wheels giving him added hight I would say he's the same hight at 18 feet tall.
6.75 cubic feet.
On average 18-20 feet.
I think archangels can be tall or as short as they want to but michael probobly 16 to 18 feet tall
180 Feet; The average "Story" is around 10 feet.
Some milkweed get 4 feet tall. Tropical milkweed is much shorter, perhaps 18 inches tall.
The seismosaurus was roughly 18 feet tall. If you are 6 feet tall, you are 1/3 the height of a seismosaurus.