Question

find the cost of flooring a square room whose side is 8metre at Rs.21 per square metre​

Answer 1

Answer :

The cost of flooring a square room whose side is 8 metre at Rs. 21 per metre is Rs. 1538

Step by step explanation :

$\large\sf\boxed{Area\:of\:square = (Side)^2}$

Given,

• Side of a square room : 8 metre
• The cost at which side is 8 m : Rs. 21 per square metre

To find,

• Cost of flooring a square room whose side is 8 metre at Rs. 21 per metre square : ?

According to the question,

$\large\longrightarrow\sf\red{(Side)^2 = (8m)^2 = 64 m^2}$

$\large\longrightarrow\sf\red{Cost = Rs. 21 per\: metre\:square\times 64 m^2}$

$\large\longrightarrow\sf\purple{Rs.\:1538}$

Some extra information :

★ What do you know about a square?

→ A square is 4-sided polygon. It can be known as a quadrilateral as it is also 4-sided.

★ Difference between area and perimeter?

→ Area = When someone has talked about the inner floor of any area in the question.

→ Perimeter = When someone has talked about the fencing of a particular area in the question.

Answer 2

Given :

Side of square room = 8m

Cost of flooring = Rs. 21 per m²

To find :

Cost of flooring the square room

Formula used :

Area of square = side × side

Solution :

Area of square room = side × side

=> 8 m × 8 m

=> 64 m²

Cost of flooring the square room = Cost per m² × area of room

=> Rs. 21 / m² × 64 m²

=> Rs. 1538

Answer :

Cost of flooring the square room is Rs. 1538