Answer:
48 plants.
Step-by-step explanation:
On one side there would be 21 * 12 inches / 21 inches =- 12 plants.
There are 4 sides so that makes 48 plants.
1,5 . n = 13,65
We know:
and
So,
Pass as division.
Btw, we also know:
4/xt 3 sqaured