To find the number of pounds of nails required for 17850 square feet of drywall, we can use the given information that each thousand square feet requires 4.5 pounds of nails.
First, we need to determine how many thousand square feet are in 17850 square feet. We can do this by dividing the total square footage by 1000:
17850 square feet / 1000 = 17.85 thousand square feet
Next, we can calculate the number of pounds of nails required by multiplying the number of thousand square feet by the pounds of nails per thousand square feet:
17.85 thousand square feet * 4.5 pounds = 80.325 pounds
Therefore, 80.325 pounds of nails are required for 17850 square feet of drywall.