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 Mathematics Form 2 Measurement Questions and Answers

A room is to be constructed such that its external length and breadth are 7.5 m and 5.3 m respectively. The thickness of the wall is 15 cm, and its height is 3.3 m. A total space of 5 #m^3# is to be left out in
the walls for a door and windows.
(a) Calculate the volume of the material needed to construct the walls without the door and windows.
(b) The blocks used in constructing the
walls are 45 cm X 20 cm X 15 cm. 0.225 #m^3# of cement mixture is used to join the blocks. Calculate the number of blocks needed to construct the room.

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