Question

The annual expenditure of the US federal government is approximately 444 trillion dollars. If a one dollar bill is 0.00010.00010, point, 0001 meters thick, how many meters tall would a stack of 444 trillion one dollar bills be? Write your answer in scientific notation. For reference: 111 trillion =10^{12}=10 12

Answer 1

Answer:

$4*10^{7}$ meters.

Step-by-step explanation:

This question can be solved using a rule of three.

If a one dollar bill is 0.0001 meters thick.

So 1 dollar is $10^{-5}$m tall.

How tall is 4 trillion one dollar bills?

1 trillion = $10^{12}$

So 4 trillion = $4*10^{12}$

Then

1 dollar - $10^{-5}$m

$4*10^{12}$ - xm

$x = 4*10^{12}*10^{-5} = 4*10^{7}$

The answer is $4*10^{7}$ meters.