A wooden door,2 m 8 cm high and 1.2m wide has 4 glass panes fitted on it. each pane is 40 cm by 20 cm. what is the area of the wood
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area of wood = area of door - area of 4 panes
=2×8×1.2-4×0.40×0.20
=19.2 - 0.08
=18.4
=2×8×1.2-4×0.40×0.20
=19.2 - 0.08
=18.4
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