High School

Ahmed is trying to see how many times he can fold a piece of paper in half. The thickness of the piece of paper he starts with is 0.001 centimeters. How thick will the paper be after 10 folds?

Answer :

To find out how thick the piece of paper will be after Ahmed folds it in half 10 times, let's break down the problem step-by-step.

1. Start with the initial thickness:
- The initial thickness of the paper is 0.001 centimeters.

2. Understand the folding process:
- Each time the paper is folded in half, its thickness doubles.

3. Calculate the thickness after each fold:
- After the 1st fold, the thickness is [tex]\(0.001 \times 2\)[/tex] centimeters.
- After the 2nd fold, the thickness is [tex]\((0.001 \times 2) \times 2\)[/tex] centimeters.
- After the 3rd fold, the thickness is [tex]\(((0.001 \times 2) \times 2) \times 2\)[/tex] centimeters.

4. Generalize the pattern:
- After each fold, the thickness of the paper is multiplied by 2. Therefore, after [tex]\(n\)[/tex] folds, the thickness will be:
[tex]\[
\text{Initial thickness} \times 2^n
\][/tex]

5. Calculate the thickness after 10 folds:
- Substitute [tex]\(n = 10\)[/tex] and the initial thickness of 0.001 cm into the formula:
[tex]\[
\text{Thickness after 10 folds} = 0.001 \times 2^{10}
\][/tex]

6. Simplify the calculation:
- Compute [tex]\(2^{10}\)[/tex]:
[tex]\[
2^{10} = 1024
\][/tex]
- Now multiply the initial thickness by 1024:
[tex]\[
0.001 \times 1024 = 1.024 \text{ centimeters}
\][/tex]

So, after 10 folds, the paper will be 1.024 centimeters thick.