The length is 12 square feet. We know the area, and we know the width. The way to find the length is take the area, and divide it by the width. So 120 divided by 10. The answer to that is 12, so 12 square feet is your answer.
~Deceptiøn
5/8 * 15 = 9.375000 exactly. The closest number to 9 is 3, which is below 5. This means to round the number down to the number it is closer to. 9.375 is closer to 9 than any other number, so we round it down to 9. Since Cassidy has 10 feet of string, and she uses the same amount for each bracelet, we can assume that she has enough to make 15 bracelets, possibly even 16.