Remote Area for Dry System & Sloped Ceiling

A project that contains a light hazard office space with a dry-pipe sprinkler system, and a 900 sqft area with sloped ceilings (about a 5/12 pitch). Per NFPA 13, the remote area should increase by 30% for the dry system (NFPA 13-2013 Section 11.2.3.2.5) and another 30% for the slope (NFPA 13-2013 Section 11.2.3.2.4). However, does the fact that only 900 sqft of the entire remote area is sloped impact the overall size of the remote area at all? Curious in other's opinions.

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