Question

The perimeter of a square is 84 cm. Find the length of one side of the square.​

Answer 1

Answer:

If the perimeter of a square is 84 cm, then the length of one side of the square is 21 cm.

Step-by-step explanation:

Given:

The perimeter of a square = 84 cm

Find the length of one side of the square.​

Formula: The perimeter of a square = 4(side)

The perimeter of a square = 4(side)

4(side) = 84

side = 84/4

side = 21 cm

So, the length of one side of the square is 21 cm.

Answer 2

Answer:

Length of side of square is $21$ cm .

Step-by-step explanation:

To find : length of side of square

Given : perimeter of square is $84$ cm .

Solution :

• As per given data we know that , perimeter of square is $84$ cm .
• We know that all four sides of square are equal .
• If ' $a$ ' is the side of square then perimeter of square is given by,
• Perimeter of square $=4 a$
• Therefore, by substituting the value in above formula we find length of side of square .
• Perimeter of square $=4 a$

                                     $84 = 4\times a \\\\ a = \frac{84}{4}\\\\ a = 21\ cm$