actually it would be 3 to the 3rd power which is 9
3 x 3 = 9
There are 9 square feet in a square yard so 3 square feet would be one third.
3
One third of 72745.2 square feet is approximately 24248.4 square feet.
1/3 acre is 14,520 square feet.
1/3 acre is 14,520 square feet.
1/3 acre is 14,520 square feet.
14,520 square feet in 1/3 of an acre.
It could be a square whose sides are sqrt(1/3) of the original square or a rectangle whose length is the same as the side of the square but whose width is one third of that. There are many other possibilities.
2.309401, rounded to the 6th decimal place.
Assuming you mean the cube root, the answer is 3.
1/3 acre is 1348.95 square metres.