The distance around the wall is 42 linear feet.
All you do is multiply 9 by 9 ...
12 feet.
Not enough information. Depends on the width of the boards.
The area of that wall would be 138 square feet.
The distance around the wall is 42 linear feet.
on a wall it would be 100 square feet.
12
80
All you do is multiply 9 by 9 ...
9
There would be 5 plants along a 30 foot wall because if you divide 30 by 6, you will get 5 feet.
hanging wall - above one's head, foot wall - below one feet (mining definition)
The distance around the wall (perimeter) is 216 feet.
Not enough information. Depends on the width of the boards.
12 feet.
The area of that wall would be 138 square feet.