Question

If a one dollar bill is 0.0001 meters thick, how many meters tall would a stack of 4 trillion one dollar bills be?

Answer 1

so multiply .0001 by 4,000,000,000,000.
so use the decimal thing 1st.
so 1*4,000,000,000, and thats ur answer

Answer 2

`4*10^(8)\text{ meters}=400,000,000\text{ meters}`.

Explanation:

We have been given that a one dollar bill is 0.0001 meters thick. We are asked to find the height of a stack of 4 trillion one dollar bills.

We know that
`\text{1 trillion}=10^(12)`. To find the thickness of a stack of 4 trillion one dollar bills we will multiply 0.0001 by 4 trillion.

Let us convert 0.0001 into scientific notation as:

`0.0001=1* 10^(-4)`

`\text{The height of 4 trillion one dollar bills}=4*10^(12)* 1* 10^(-4)\text{ meters}`

Using exponent property
`a^b* a^c=a^(b+c)` we will get,

`\text{The height of 4 trillion one dollar bills}=4*10^(12-4)\text{ meters}`

`\text{The height of 4 trillion one dollar bills}=4*10^(8)\text{ meters}=400,000,000\text{ meters}`

Therefore, the stack of 4 trillion one dollar bills would be
`4*10^(8)\text{ meters}=400,000,000\text{ meters}`.