Original sentence: Construction is expected to be completed during 2009, and the museum is scheduled to open April, 2010..  The museum will include approximately  of exhibition space, spread over 20 rooms, througout the building's  floorplan
Edited sentence: Construction is expected to be completed during 2009, and the museum is scheduled to open April, 2010..  The museum will include approximately  of exhibition space, spread over 20 rooms, throughout the building's  floorplan