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

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

Solution :-

Area of Square = Side × Side

Perimeter of Square = 4 × side

Formula Used :-

Area of Square

Side of square

To Find :-

Perimeter of Square = 80 cm

We Have :-

Step-by-step explanation:

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

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Answer 2

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 :-

\begin{gathered}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} \end{gathered}

PerimeterofSquare=4×side

80=4×side

side=

4

80

side=20cm

areaofsquare=side×side

area=20×20

area=400cm

2

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