Question

find the area and the perimeter of a square whose diagonal is 10 cm long​

Answer 1

Answer:

Area of a Square = side × side

= 10 × 10

= 100 cm

Perimeter of a square = 4 × side

= 4 × 10

= 40 cm

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Answer 2

AnswEr :

➟ Diagonal of Square = √2 × Side

➟ 10 = √2 × Side

➟ Side = $\large\tt{\frac{10}{\sqrt{2} }}$

➟ Side = 5√2 cm

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➟ Area of Square = Side²

➟ Area of Square = (5√2)²

➟ Area of Square = 5√2 × 5√2

➟ Area of Square = 25 × 2

➟ Area of Square = 50 cm²

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➟ Perimeter of Square = 4 × Side

➟ Perimeter of Square = 4 × 5√2

➟ Perimeter of Square = 20√2 cm