user: Question: What is the area (km 2) where the population density (/mk2) is 84.3?
Columns: ['INEGI code', 'Municipality', 'Municipal Seat', 'Area (km 2 )', 'Population (2005)', 'Population density (/km 2 )', 'Human Development Index (2000)']
Types: ['real', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: [1.0, 'Amealco de Bonfil', 'Amealco', '682.1', 56457.0, '82.8', '0.6803']
SQL:

assistant: SELECT "Area (km 2 )" FROM "Table" WHERE "Population density (/km 2 )" = '84.3';