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.
SSDI amount. Social Security disability insurance (SSDI) payments have been increased by 1.5%. The average monthly SSDI benefit is $1,148 in 2014, while the maximum SSDI monthly payment is $2,642. Benefit amounts for the spouses and children of disabled workers have also increased by 1.5%.