Question

« #4700 bricks each of size 25 cm x 16 cm x 10 cm are required to construct a wall
20 m long and 20 cm wide containing two windows of size 2m x 1.5 m each. find
the height of the wall​

Answer 1

Answer:

the height of the wall = 4.55 m

Step-by-step explanation:

each brick size = 25 cm x 16 cm x 10 cm

4700 brick size = 4700 x 25 cm x 16 cm x 10 cm = 18800000 cm^3

two windows size = 2*200 cm x 150 cm x 10 cm = 600000 cm^3

let the height of the wall be h cm

a wall size = 20 m x 20 cm x h cm = 18800000 - 600000

or h = 18200000 /(2000*20) = 455 cm = 4.55 m