A car on average weighes about 1000 kilos a fair few weigh more and some weigh less. So the number of cars needed would be somewhat less than 10 billion
3,500,000 short tons.
2,000 pounds = 1 ton 200 billion pounds = 100 million tons
The U.S. has 475 billion tons in coal. This is more than other countries, such as Germany, which has 7.5 billion tons.
2 billion half tons
One billion (1,000,000,000) pounds = 500,000 US Tons 446,000 UK Long Tons 454,000 Tonnes (Metric Tons)
1.1 billion tons per year
4 billion pounds equates to 1,814,400 tonnes.
650 billion of them.
4,000,000,000,000
Exactly 4.0389
12,000,000,000,000,000 lbs
1 Gt = 1 billion tons (1,000,000,000 tons) 1 Mt = 1 million tons (1,000,000 tons) 1 billion ---------- = 100 Mt in per Gt 1 million