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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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  14. The carpet for a room 6.6 m by 5.6 m costs Rs 3960 and it was made ...

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  15. A room is 9 m long, 8 m broad and 6.5 m high. It has one door of di...

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  16. A hall 36 m long and 24 m broad allowing 80\ m^2 for doors and windows...

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