What is the expanded form for the population of arlington

1.       The population of Arlington as of end of 2013 reached 379 577.
Now, we need to give its expanded form:
Expanded form is the expression in which you expand the given number using operator.
=> 379 577
=> 300 000 + 70 000 + 9 000 + 500 + 70 + 7
=> 3 hundred thousands + 7 ten thousands + 9 thousands + 5 hundreds + 7 tens + 7 ones.
Thus that is equals to 379 577

No a triangle cannot be formed because when you add the two smallest number together (which would be 11) the have to be bigger than the number it is "against" ( which would be 12)