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Area of a square is 1/2 hectare. The diagonal of the square is?

250 meter
100 meter
50√ 2 meter
50 meter

Correct Answer: 100 meter

Explanation:

Area = 1/2 hectare = 10000 / 2 m²
= 5000 m²
Again Area = 1/2 x (Diagonal)²
So 1/2 x (Diagonal)² = 5000m²
⇒ Diagonal²= 10000
∴ Diagonal = 100

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