Question

A brick measures 20cm x 10cm X 3.5cm.How many bricks will be required for a Wall of dimensions 25m x 2m x 0.35m?

Answer 1

plz find the attachment

Answer 2

The number of bricks required = 25000

Given :

• A brick measures 20cm × 10cm × 3.5cm

• A Wall of dimensions 25m × 2m × 0.35m

To find :

The number of bricks required

Solution :

Step 1 of 2 :

Calculate volume of the wall and a brick

The Wall is with dimensions 25m × 2m × 0.35m

Volume of the wall

= 25m × 2m × 0.35m

= 2500 cm × 200 cm × 35 cm

= 17,500,000 cm³

A brick measures 20cm × 10cm × 3.5cm

Volume of a brick

= 20cm × 10cm × 3.5cm

= 700 cm³

Step 2 of 2 :

Calculate number of bricks required

The number of bricks required

$\displaystyle \sf = \frac{Volume \: of \: the \: wall }{Volume \: of \: a \: brick}$

$\displaystyle \sf = \frac{17,500,000}{700}$

= 25000

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