High School

A piece of paper is [tex]8.1 \times 10^{-3}[/tex] meters thick. Approximately how many pieces of paper are required to make a stack two meters high?

Answer :

Sure, let's work through the problem step by step.

1. Understanding the Problem:
- You have a single piece of paper which is 8.1 millimeters thick.
- You want to know how many such pieces of paper are needed to make a stack that is 2 meters tall.

2. Conversion:
- First, convert the thickness of the paper from millimeters to meters since the stack height is given in meters.
- 1 millimeter is equal to 0.001 meters, so:
[tex]\[
8.1 \, \text{mm} = 8.1 \times 0.001 \, \text{m} = 0.0081 \, \text{m}
\][/tex]

3. Calculation:
- To find out how many pieces of paper are required, you divide the total desired stack height by the thickness of one piece of paper:
[tex]\[
\text{Number of pieces} = \frac{\text{Stack Height}}{\text{Thickness of one piece}}
\][/tex]
- Plug the values into the formula:
[tex]\[
\text{Number of pieces} = \frac{2.0 \, \text{m}}{0.0081 \, \text{m}}
\][/tex]

4. Result:
- Performing the division gives approximately:
[tex]\[
\approx 246.91
\][/tex]

Therefore, you would need approximately 247 pieces of paper to make a stack two meters high. Remember to round up since you can't use a fraction of a paper in a physical stack!