Question

a wall 15 M long 30 cm wide in 4 m high is made of bricks each measuring 22 CM X 12.5 CM X 7.5 cm is 1 / 12 of the total volume of the wall consist of motor how many bricks are there in a wall

Answer 1

Answer:

8000 is the answer.

Step-by-step explanation:

Length=15m =15 cm, breadth=30cm=30/100 (we hv to convert the cm into m ) and height=4m.

Therefore, volume of the wall=l*b*h=(15*4*30/100)=18cubic m.

Volume of motar=1/12*18= 3/2=1.5 cubic cm.

volume of bricks = (Volume of the wall- volume of the mortar)=18-1.5=16.5 cubic m.

Volume of 1 brick =(22/100*12.5/100*7.5/100) for converting cm into m.

                            =33/16000=cubic m.

so at last , no of bricks = volume of bricks/volume of 1 brick

                                      =16.5/(33/16000) cubic m

                                      =8000 .