Simplify the following text for a Grade 4 native English-speaking person.
Original: Addison Airport consumes roughly half of the city 's 11.5 square kilometers ( 4.4 square miles ) and is the third-largest general aviation airport in the nation . Major corporate headquarters in Addison include Dresser and Mary Kay Cosmetics .
Simplified: Addison has an area of 4.4 square miles .