Question

Find the cost of painting square board of side 36 cm at the rate of rs.4 sq.cm

Answer 1

Given :

• Side of a square board = 36 cm
• The cost of painting square board per cm² = Rs 4

To find :

• Cost of painting square board

According to the question,

➞ Area of square = (Side)²

➞ Area of square = 36 cm × 36 cm

➞ Area of square = 1296 cm²

• So,the area of square board is 1296 cm².

Now,

• The cost of painting square board per cm² is Rs 4

➞ Cost of painting square board = Rs 4 × Area of square board

➞ Cost of painting square board = Rs 4 × 1296

➞ Cost of painting square board = Rs 5184

• So,the cost of painting square board is Rs 5184.

____________________

Answer 2

Answer:

Given :-

• Side of square board = 36 cm
• Rate of painting = ₹4 per m

To Find :-

Total cost

Solution :-

When we paint any thing we find its Area.

Therefore,

We will first find Area of square

As we know that

$\huge \boxed{ \bf \: Area \: = {side}^{2} }$

$\tt \: Area = ( {36})^{2}$

$\tt \: Area = {1296 \: cm}^{2}$

Now,

Let's find Total cost

$\tt \: Total \: cost = Area \times 4$

$\tt \: Total cost = 1296\times 4$

$\mathfrak \green{ \: Total \: cost =5184 \: rs}$

Hence :-

Total cost of painting square board is ₹5184