Final answer:
The perimeter of the square with an area of 45 cubic units is 12√5 units.
Step-by-step explanation:
To find the perimeter of a square, we need to know the length of one of its sides. Since the square has an area of 45 cubic units, we can find the length of one side by finding the square root of the area. The square root of 45 is 3·√5 units. Since the square has four equal sides, the perimeter is found by multiplying the length of one side by 4. Therefore, the perimeter of the square is 12·√5 units.
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