Correction for the size of Indira Gandhi International Airport (DEL)
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How big is 47,300,000 square meters?
It's about two-and-a-half times as big as Indira Gandhi International Airport (DEL)

The size of Indira Gandhi International Airport (DEL) is about 20,660,000 square meters.
(Palam, Delhi, India) (total site area)
Indira Gandhi International Airport covers a total area of about 20,660,000 square meters, including three main terminals and three main runways. The airport offers a total runway length of 11,053 m.