CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

A wall 15 m long, 30 cm wide and 4 m high is made of bricks, each measuring (22 cm×12.5 cm×7.5 cm).If112 of the total volume of the wall consists of mortar, how many bricks are there in the wall ?


Solution

Height of the wall = 4m = 400cm 

Length of the wall = 15m = 1500cm 

Width of the wall = 30cm 

∴ Volume of the wall = (400 *1500 *30)cm3 = 18000000cm3

Given that 1/12 volume of wall consist of mortar . 

Volume of the wall consisting of mortar = 18000000cm312 = 1500000 cm3

Sothat Volume of wall consisting of bricks = 18000000 - 1500000 = 16500000cm3

Dimensions of brick l = 20 cm,  b = 12.5 cm, h = 7.5 cm. 

Volume of each brick = (20 x 12.5 x 7.5) cm3 = 1875 cm3

Now the number of bricks in wall = Volume of the wall consisting of bricksVolume of one brick

Number of bricks in wall = 16500000/1875 = 8800. 

Thus, there are 8800 bricks in the wall. 

Hence, the required number of bricks is 8800.

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More


Same exercise questions
View More


People also searched for
View More



footer-image