Question

if its edge is
4. How many bricks will be required to build a wall 30 m long, 50 cm thick and
2.5 m high with each brick being 20 cm long, 10 cm wide, and 7.5 cm thick?
th
cm​

Answer 1

Answer:

25,000 bricks will be required

Step-by-step explanation:

Simple

Number of bricks required = volume of wall /volume of brick

Wall is 30 m long, 50 cm =0.5m thick and 2.5 m high

Volume of the wall is 30 × 0.5 × 2.5 = 37.5m³

Each brick is 20 cm = 0.2m long , 10 cm = 0.1m wide, and 7.5 cm = 0.075m thick

Volume of brick is 0.2 × 0.1 × 0.075 = 0.0015m³

So number of bricks required are = 37.5/0.0015 = 25,000

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