Question

How many bricks of length 25 cm, breadth 15 cm and height 10 cm are required to build a wall of length 6 m, height 2.5 m and breadth 0.5 m?

Answer 1

length of brick = 25cm
breadth of brick = 15 cm
height of brick = 10cm
volume of brick = length × breadth × height
= 25 cm × 15 cm × 10cm
= 3750 cm³

length of wall = 6m = 600 cm
breadth of wall = 0.5 m = 50cm
height of wall = 2.5 m = 250 cm
volume of wall = length × breadth × height
= 600 × 250 × 50 = 7500000 cm³

$\textbf{number of bricks} = \frac{\text{volume of wall}}{\text{volume of brick}}$
= 7500000/3750
= 750000/375
= 2000

hence, number of bricks = 2000

Answer 2

Answer:

Step-by-step explanation:

length of brick = 25cm

breadth of brick = 15 cm

height of brick = 10cm

volume of brick = length × breadth × height

= 25 cm × 15 cm × 10cm

= 3750 cm³

length of wall = 6m = 600 cm

breadth of wall = 0.5 m = 50cm

height of wall = 2.5 m = 250 cm

volume of wall = length × breadth × height

= 600 × 250 × 50 = 7500000 cm³

= 7500000/3750

= 750000/375

= 2000

hence, number of bricks = 2000