The floor area of the average IKEA store is 21,395.7 square metres based on there being 186 IKEA stores worldwide with a combined floor area totalling 3,979,600 square metres. 3,979,600 square metres is equivalent to 577 Premiership football pitches.
And, changing the subject,
The average woman menstruates 18.64 litres of blood in her lifetime.
Finally,
If an ant was as big as a man, a man would have to be 765.63 metres tall to be the same relative size
(Empire State Building - 381 metres..Eiffel Tower 300 metres..Beetham Tower, Manchester, 168.67metres)