Question

A builder uses bricks that are 7,23 cm high. he builds a wall that is 42 bricks high. but the top 9 bricks fall down. how much high is the remaining wall?


plz plz help with an example

Answer 1

Answer:

23829 cm.

Step-by-step explanation:

step1: total height of the wall 30,366 cm.

step2: height of the nine top bricks = 723×9=6507 cm.

step3: present height = 30336-6507= 23839 cm.

Answer 2

Answer:

Given:

Height of bricks =7.23 cm

No. Of bricks = 42

Since 9 bricks fall down therefore numbed of remaining bricks are 42-9=33

Now 7.23x33=238.59cm

Hence the wall will be 238.59 cm high