The side is sqrt(324) = 18 units.
Volume = 324 units3
324 square units
An 18 * 18 square has an area of 324 square units.
There are 36 inches in one yard. Therefore, 9 yards is equal to 9 x 36 = 324 inches. The two units are therefore identical.
The side is sqrt(324) = 18 units.
1
72 units
18 units of measurement
You can not equate the two units.
The area is 324 square units.
Volume = 324 units3
The square root of 324 is 18 and 4*18 = 72 units of measurement which is the perimeter of the square.
324 units
324 square units
blah blah blah
Any area you want greater than 0 square units and less than or equal to 324/π sq units ≈ 103.13 sq units.