Question

how many bricks each of dimensions 18 cm by 12 CM by 10 cm will be required to build a wall 12 m long 80 CM thick and 3.6 M height find the total cost of breaks at rupees 750 for 1000

Answer 1

Answer:

16,000 bricks

Step-by-step explanation:

$\text{Volume of Brick = } l \times b \times h = 18 \times 12 \times 10 \: cm^3\\\\= \dfrac{18 \times 12 \times 10}{100 \times 100 \times 100} \: m^3\\\\\\\text{Now, Volume of wall to be built = } L \times B \times H = 12 \times 80 \times \times 3.6\\\\= \dfrac{12 \times 80 \times 36}{100 \times 10} \: m^3\\\\\\\text{Thus, No. of bricks required (n) = } \dfrac{LBH}{lbh}\\\\\\= \dfrac{12 \times 80 \times 36}{100 \times 10} \div \dfrac{18 \times 12 \times 10}{100 \times 100 \times 100}$

$= \dfrac{12 \times 80 \times 36}{100 \times 10} \times \dfrac{100 \times 100 \times 100}{18 \times 12 \times 10}\\\\\\= \bold{16000 \: bricks}$

Hope it helps!