This Calculator should be used as an estimating tool ONLY. 1  Enter the dimensions below to calculate how many bags of concrete you need. After entering the dimensions of the pad, click on Calculate and the calculator will provide you with the amount of concrete. 2  ft in. 3  ft in.  ft in.
According to the International Renewable Energy Agency (IRENA), renewable energy employment in the United States reached 724,000 jobs in 2014, a 16 percent increase from the previous year (IRENA does not include large-scale hydropower in their estimates).
There are a total of 21,292,000 government employees in the United States as of February 2010. This is according to the Employment Situation Summary published by the US Bureau of Labor Statistics on March 5, 2010. This number shows an 0.6% increase in the number of US government employees compared to February 2009.