Problem: a person jogged 10 times along the perimeter of a rectangular field at the rate of 12 kilometers per hour for 30 minutes . if field has a length that is twice its width , find the area of the field in square meters . 
Options: ['a ) 20,000 square meters', 'b ) 10,000 square meters', 'c ) 30,000 square meters', 'd ) 40,000 square meters', 'e ) 50,000 square meters']
a