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    				| 1. | 
                                    how many bricks each of size 25 cm into 13.5 cm into 6 will be required to build of wall 8m long 70 cm broad and 32 CM thick resuming that there is no wastage | 
                            
| Answer» VOLUME of BRICK = 25×13.5×6 = 2025 cmvolume of WALL = 8×70×32 = 17920 cmno. of bricks = 17920÷2025 =8.849 or 9 bircks (ANS) | |