Question

A brick is 25 cm long 15 cm broad and 10 cm height . How many bricks are required to construct a wall 6 m long,50 cm broad and 5 m height,1/10th of the wall is made up of cement ​

Answer 1

Answer:

Step-by-step explanation:

    Volume of wall=lbh = 600*50*500=15000000cm^2

         volume of cement= 1/10th volume of wall

                          =1/10*15000000

 Vol. of brick=vol of wall -vol. of cement=15000000-1500000

       =13500000cm^2

     Let n be the no. of bricks.

so,

              n*lbh=13500000

            =                n*25*15*10=13500000

                     n=13500000/25*15*10=13500000/3750=3600

        Therefore, no. of bricks required are 3600.

hope it helps....pls mark brainliest.

Answer 2

volume of each brick : 25× 15×10= 3750 cm^3

3750/ 1000000 m^3 = 3/800 m^3

volume of the wall : 6m× 0.5m× 5m= 15m^3

volume of cement in the wall : 1/10 ×15 = 1.5 m^3

volume if remaining wall : 15 - 1.5 = 13.5 m^3

Number of bricks : 13.5 ÷ 3/800

= 13.5× 800/3 = 3600 bricks.

answer is 3600 bricks.