Answer:
400,000,000 or [tex]4*10^{8}m[/tex]
Step-by-step explanation:
Put them both into standard form.
[tex]0.0001=1*10^{-4} and 4 trillion is 4*10^{2}[/tex]
Multiply them together.
[tex](1*10^{-4})*(4*10^{12}=4*10^{8}[/tex]
