United States total area: 3,537,441 square miles.
The US, as a whole, is 3.690 million square miles larger.
It is 40,409 square miles making it the 37th largest state in the US.
It is 35,385 square miles.
91,136 Square miles.
356,667 square miles.
The United States is 3,794,000 square miles large, and South America is 6,888,000 square miles large. The US is 55.08% of the size of South America. South America is 1.815 times the size of the US. So ultimately to answer your question, No, the US is not twice as large as South America but is almost half the size (3,444,000 mi2).
Alaska is the largest state in the U.S. The state has total area of 665,384 square miles which includes 570,641 square miles of land.
Japan - 145,882.85 square miles.
Netherlands - 16,033 square miles.
It is the 31st largest US State with a total area of 51,885 square miles.
It has an area of 69.898 square miles. That makes it the 20th largest US State.
The US' total area is about 3.806 million square miles.