Plz solve 13th question
Solution) 13)
Length of the wall = 5 m = 500 cm {1 m = 100 cm}
Breadth of the wall = 20 cm
Height of the wall = 2 m = 200 cm
Volume of wall = 500 × 20 × 200 = 2000000 cm3
Now, volume of each brick = 20 × 10 × 4.5 = 900 cm3
Also, volume of the mortar = (Volume of wall)
= × 2000000
= 200000 cm3
Total volume of the bricks in the wall
= volume of the wall − volume of motor
= (2000000 − 200000) cm3
= 1800000 cm3
∴ Number of bricks =
Length of the wall = 5 m = 500 cm {1 m = 100 cm}
Breadth of the wall = 20 cm
Height of the wall = 2 m = 200 cm
Volume of wall = 500 × 20 × 200 = 2000000 cm3
Now, volume of each brick = 20 × 10 × 4.5 = 900 cm3
Also, volume of the mortar = (Volume of wall)
= × 2000000
= 200000 cm3
Total volume of the bricks in the wall
= volume of the wall − volume of motor
= (2000000 − 200000) cm3
= 1800000 cm3
∴ Number of bricks =