Question

A brick measures 15 cm in length, 8 cm in breadth and 5 cm in height. How many
bricks will be used to make a wall of length 500 cm, breadth 100 cm and height 600 cm?

Answer 1

• Brick and Wall are Cuboid in shape.

• A Cuboid is a 3-dimensional solid shape having length, breadth and Height.
• So, Its Volume is calculated by multiplying length, breadth and height.

Volume of Brick:

Length = 15 cm

Breadth = 8 cm

Height = 5 cm

∴ Volume = Length × Breadth × Height = 15 × 8 × 5 = 600 cm³

Volume of the Wall:

Length = 500 cm

Breadth = 100 cm

Height = 600 cm

∴ Volume = Length × Breadth × Height = 500 × 100 × 600

                                                                 = 3,00,00,000 cm³

 $\sf{Number \: of \: Bricks \: needed \: for \: the \: Wall = \dfrac{Volume \: of \: Wall}{Volume \: of \: Brick}}$

Number of Bricks needed = $\dfrac{30000000}{600} = 50,000$

Answer:

50,000 bricks are needed to make the wall.