To find out how many pounds of gravel it takes to cover one square foot, we can divide the total pounds of gravel used by the total square footage of the garden plot.
252 lb / 36 ft² = 7 lb/ft²
So, it takes 7 pounds of gravel to cover one square foot.
To determine how large an area could be covered with 315 lb of gravel, we can divide the total pounds of gravel by the pounds needed to cover one square foot.
315 lb / 7 lb/ft² = 45 ft²
Therefore, 315 pounds of gravel can cover an area of 45 square feet.
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