Here is the solution based on the given problem above. Given: Area of the piece of paper = 84 square inches Width = 10 1/2 or 10.5 inches long ? = length of the piece of paper To find the area of an object, the formula would be A= L x W Now, let's substitute the given values above 84in2 = L(10.5in) Now, divide both sides with 10.5 and we get 8. L = 8 inches. Therefore, the length of the paper is 8 inches. Hope this solution helps.