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Question
How many square metres of glass will be required for a window, which has 12 panes, each pane measuring 25 cm by 16 cm?
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Solution
We have,
Length of the glass pane = 25 cm
Breadth of the glass pane = 16 cm
Area of one glass pane = 25 cm x 16 cm = 400 cm2 = 0.04 m2 [ Since 1 m2 = 10000 cm2 ]
Thus,
Area of 12 such panes = 12 x 0.04 = 0.48 m2
Length of the glass pane = 25 cm
Breadth of the glass pane = 16 cm
Area of one glass pane = 25 cm x 16 cm = 400 cm2 = 0.04 m2 [ Since 1 m2 = 10000 cm2 ]
Thus,
Area of 12 such panes = 12 x 0.04 = 0.48 m2
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