How many square metre of glass will required for a window, which has 12,panes each measuring 25cm by 16cm
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25cm = 0.25m
16cm = 0.16m
Area of 1 pane = 0.25 × 0.16
= 0.04m^2
Area of 12 panes = Area × 12
= 0.04 × 12
= 0.48m^2
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