Then minimum size of air conditioner for the room with an assumed length and with of 9 and 7.5 meters respectively is 1687.5 BTU
To determine the size of the air conditioner we need some parameters of the room which are
Assumed Data
Let us find the are of the room
Area = Length*Width
Area = 9*7.5
Area = 67.5 meters square
After getting the area we need to multiply this value by 25BTU to obtain the ample cooling for the room
= 67.5*25
= 1687.5 BTU
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