Question

Find the number of bricks, each measuring 20cm x 10cm x 7.5 cm required to construct a wall 6m long, 5m high and 50cm thick.

Answer 1

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Step-by-step explanation:

wall

l=6m

b=50cm= 0.5m

h=5m

volume of volume= l×b×h= 6×0.5×5=15m^3

brick

20cm=0.2m

10cm=0.1m

7.5cm=0.075 m

volume of bricks = l×b×h = 0.2×0.1×0.075=0.0015m^3

number of bricks = volume of wall /volume if brick

15/0.0015= 10,000

10,000 bricks are needed