Question

9) A wall 10 m long, 5 m high and 64 cm thick has to be built. If the dimensions of a brick
are 20 cm by 16 cm by 8 cm, then how many bricks will be used?
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Answer 1

Answer:

12500 bricks

Step-by-step explanation:

Volume of wall= 10 x 5 x 0.64

                        = 50 x 0.64

                        = 32

Volume of one brick= 0.2 x 0.16 x 0.08

                                 = 0.00256

Amount of bricks= 32/0.00256

                            = 12500