Answer: To find the total amount of sand in the sandbox, we can multiply the number of buckets by the weight of each bucket.
Number of buckets of sand = 6.75
Weight of each bucket = 4.32 pounds
Total weight of sand in the sandbox = Number of buckets * Weight of each bucket
Total weight of sand = 6.75 * 4.32
Now, calculate the total weight of sand in the sandbox:
Total weight of sand ≈ 29.16 pounds
So, there are approximately 29.16 pounds of sand in the sandbox.