To find out the total amount of string needed when you need 3 lengths, and each length is 6 inches, you can follow these simple steps:
1. **Identify the length of one piece of string:** Each piece is 6 inches long.
2. **Determine how many pieces you need:** You need a total of 3 pieces.
3. **Calculate the total length of string:** To find the total, you multiply the length of one piece of string by the number of pieces you need. In this case, multiply 6 inches (length of one string) by 3 (number of strings needed).
So, the total length of string you'll need is:
\[
6\ \text{inches/string} \times 3\ \text{strings} = 18\ \text{inches}
\]
Therefore, you will need 18 inches of string altogether.
