Final answer:
To fence a square garden with 3 feet on each side, Chris needs 12 feet of material.
Explanation:
To calculate the amount of fencing material needed for a square garden, you need to add up the lengths of all four sides. Since Chris's square garden has each side measuring 3 feet, you would calculate 3 + 3 + 3 + 3 = 12 feet of fencing material needed.
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