Question

A square sheet of card board has a perimeter of 80 cms . what is the length of its side ? Also find the area of the square sheet ?​

Answer 1

Answer:

Length of side is 20 cm and Area of the square is 400 cm²

Step-by-step explanation:

We Have :-

Perimeter of Square = 80 cm

To Find :-

Side of square

Area of Square

Formula Used :-

Perimeter of Square = 4 × side

Area of Square = Side × Side

Solution :-

$Perimeter of Square = 4 × side \\ \\ 80 = 4 × side \\ \\ side = \dfrac{80}{4} \\ \\ side = 20 \: cm \\ \\ area \: of \: square = side \times side \\ \\ area = 20 \times 20 \\ \\ area = 400 \: {cm}^{2}$

Length of side is 20 cm and Area of the square is 400 cm²

Answer 2

Answer:

The length of side square cardboard = 20cm

The area of square cardboard = 400cm square

Step-by-step explanation:

The perimeter of square carboard  sheet =80cm

The length of its side = The perimeter of square cardboard divided by 4

                                   = 80/4

                                    =20cm

The length of side of square is 20cm

Formula area of square = side *side

The area of square cardboard =20*20

                                                 = 400cm square