Question

A Courtyard 25 metre long and 16 metre broad is to be laid with bricks of length 20 cm and breadth 10 cm find the number of bricks required .​

Answer 1

ANSWER:-

Given:

A coutyard 25m long and 16m broad is to be laid with bricks of length 20cm and bricks 10cm.

To find:

The number of bricks required.

Explanation:

We have,

• Length of the courtyard= 25m
• Breadth of the courtyard= 16m

Area of the courtyard= Length × Breadth sq.unit

⇒ Area of the courtyard= [25× 16]m²

⇒ Area of the courtyard= 400m².

We know that 1m²= 10000cm²

then, 400m²= [400× 10000]cm²

Area of the courtyard= 4000000cm².

&

On courtyard laid with bricks,

• Length of the bricks= 20cm
• Breadth of the bricks= 10cm

⇒ Area of the bricks= [20×10]cm²

⇒ Area of the bricks= 200cm².

Now,

⇒ Number of bricks= $\frac{Area\:\:of\:\: the \:\:courtyard}{Area\:\:of\:\:the\:\:bricks}$

⇒ Number of bricks= $\frac{4000000cm^{2} }{200cm^{2} }$

⇒ Number of bricks= 20000

Thus,

The number of bricks required is 20000 bricks.

Answer 2

Answer:

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Step-by-step explanation: