Question

xample 1:
A wall is 15m long, 3m high and 40cm wide. How many bricks each of size 15cm x 10cm x 6cm are
required to build the wall ? Also find the cost of the bricks at Rs.4.50 per piece.​

Answer 1

Step-by-step explanation:

Volume of wall = 15 x 3 x40/100= 18 metre cube

Volume of one brick = 15 x 6 x 10/ 100 x 100 x 100= 0.0009 metre cube

Number of bricks required = 18/0.0009 = 20000

Answer 2

Answer:

20000 bricks, Rs. 90000

Step-by-step explanation:

Volume of wall = 15 × 3 × (40/100)

Volume of brick = (15/100) × (10/100) × (6/100) = (15 × 10 × 6) / 1000000

Let number of bricks to build wall be n

n × Volume of brick = Volume of wall

n = [(15 × 3 × 40)/100] / [(15 × 10 × 6) / 1000000]

= [(15 × 3 × 4)/10] / [(15 × 6) / 100000]

= (15 × 3 × 4) / [(15 × 6) / 10000]

= (3 × 4) / [6 / 10000]

= 120000 / 6 = 20000 bricks

20000 bricks are required to build the wall.

Cost of the bricks at Rs.4.50 per piece.

Therefore, Total cost = 4.50 × 20000 = Rs. 90000

Total cost for building the wall will be Rs. 90000.