Given that there are 6 feet of paper for every pound, we can say that the weight per foot is 1/6 of a pound.
So, the weight of the entire roll of paper can be calculated as follows:
Weight = (Weight per foot) x (Total length)
Weight = (1/6 pound per foot) x (3150 feet)
Weight = 525 pounds
Therefore, the total weight of the roll of paper is 525 pounds.