Compute the ratio of the rate of heat loss through a single-pane window with area 0.15 m2m2 to that for a double-pane wi

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Compute the ratio of the rate of heat loss through a single-panewindow with area 0.15 m2m2 to that for a double-panewindow with the same area. The glass of a single pane is4.5 mm thick, and the air space between the two panes ofthe double-pane window is 7.40 mm thick. The glass hasthermal conductivity 0.80 W/m⋅K. The air films on the room andoutdoor surfaces of either window have a combined thermalresistance of 0.15 m2⋅K/W
Express your answer using two significant figures.
Hsingle/Hdouble = ?