How many bricks having dimensions 20 cm × 5 cm × 5 cm are required t

1.	How many bricks having dimensions 20 cm × 5 cm × 5 cm are required to make a wall2.5 m long, 0.5 m broad and 5 m in height?
Answer» ☆ Given:- Dimension of WALL = 2.5 m × 0.5 m × 5 m Dimension of bricks = 20 cm × 5 cm × 5 cm = 0.2m × 0.05m × 0.05m ☆ To Find:- Number of bricks needed to make the wall ☆ Concept/Formula Used:- ▪︎VOLUME of CUBOID = length × BREADTH × height ▪︎No. of bricks = Volume of wall ÷ Volume of bricks ☆ Solution:- ♤ Finding volume of bricks Volume of bricks = length × breadth × height = 0.2 × 0.05 × 0.05 = 0.0005 m³ Hence, Volume of bricks is 0.0005 m³ ♤ Finding volume of wall Volume of walls = length × breadth × height = 2.5 m × 0.5 m × 5 m = 6.25 m³ Hence, Volume of wall is 6.25 m³ ♤ Finding number of bricks used Using the concept ; No. of bricks = Volume of wall ÷ Volume of bricks Putting the VALUES: = 6.25m³ ÷ 0.0005m³ = 12,500 ☆ Answer:- ▪︎12,500 bricks used to build the wall.

How many bricks having dimensions 20 cm × 5 cm × 5 cm are required to make a wall2.5 m long, 0.5 m broad and 5 m in height?

Answer»

= 0.2m × 0.05m × 0.05m

▪︎VOLUME of CUBOID = length × BREADTH × height

▪︎No. of bricks = Volume of wall ÷ Volume of bricks

Volume of bricks

= length × breadth × height

= 0.2 × 0.05 × 0.05

= 0.0005 m³

Hence, Volume of bricks is 0.0005 m³

Volume of walls

= length × breadth × height

= 2.5 m × 0.5 m × 5 m

= 6.25 m³

Hence, Volume of wall is 6.25 m³

Using the concept ;

No. of bricks

= Volume of wall ÷ Volume of bricks

Putting the VALUES:

= 6.25m³ ÷ 0.0005m³

= 12,500

▪︎12,500 bricks used to build the wall.