Eighteen feet high refers to a measurement of vertical height equivalent to 18 feet, which is approximately 5.49 meters. This height can be found in various contexts, such as the height of a building, a tree, a sports goal, or a safety barrier. In practical terms, it is often used to describe structures or objects that are significantly taller than an average person.
36 square yards
18feet by 17feet converts to 306 feet square or 28.4 meters square.
216 inches
9 feet.
18feet = 6yards 0inches
It depends on what type of dolphin but dolphins can get anywhere from 3-18feet
18 feet is 6 yards @three feet per yard.
If that is a rectangle you are talking about, multiply length x width.
18 feet x13 feet is ~21.7 square meters.
6ft 10in
Sq footage = 18*25 = 450 square feet.
There are 3 feet in one yard so 18feet/(3feet/yard) 6 yards