A room measures 12 metres by 8.5 metres on the outside. Find the area of the floor of the room if the walls are 75 cm thick?
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length from inside = 12-0.75=11.25
breath from inside = 8.5-0.75= 7.75
area = l * b
= 11.25*7.75
= 87.1875
breath from inside = 8.5-0.75= 7.75
area = l * b
= 11.25*7.75
= 87.1875
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