Procedure. 1  Measure the height of the tree you are studying. 2  Measure the diameter of the tree you are studying. 3  Remember the formula to find the area of a circle is (A=r2 x p). 4  Now use this number to calculate the area of your tree.  Don't relax 1  now! There are 12 board feet of lumber for every one cubic foot, so multiply cubic feet by  12.
For females, the average cost of groceries for 1 per month is about two hundred eighty-three dollars ($283). For males, the average cost of groceries for 1 per month is closer to three hundred twenty dollars ($320). You can view the raw data at USDA.nswer: According to the United States Department of Agriculture, Center for Nutrition Policy and Promotion, the average cost of groceries for 1 per month in the United States is approximately three hundred one dollars ($301.00) for all categories combined.
As an example, the chart for March 2010 shows that for an average family of four, with one child between the ages of six and eight and a second child between the ages of nine and eleven, could expect to spend $954.50 per month on groceries. That adds up to $11,454.00 for the average of cost groceries per year.