âThe perimeter of the inner polygon is shorter than the circumference of the circle, while that of the outer polygon is longer.â âZenodorus studied the area of a figure with a fixed perimeter and the volume of a solid figure with fixed surface.â
Social Security generally defines substantial earnings as a certain dollar amount. In 2017, generally $1,170.00 earnings per month is substantial for non-blind workers and $1,930.00 is substantial work for the blind. These amounts refer to your gross earnings if you are an employee and your net profit if you are self-employed.
The average Social Security disability benefit amount for a recipient of Social Security Disability Insurance (SSDI) in 2016 is $1,166 per month, but a beneficiary can receive either less than this or up to $2,639. These benefits are based on average lifetime earnings, not on household income or how severe the individual's disability is.