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If the area of a square is .Find the length of its diagonal.

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answer is A.

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Detailed Solution

Concept: We are given the area of the square and we have to find the length of its diagonal. Length of the side should be calculated first to know the value of the diagonal. Apply the formula,

. Now for the diagonal put the value of side in this,

.
Given that,
Area of the square is

As we know that,

It implies that,

Square root both the sides of above equation,

Now put

Therefore,

Hence, the correct answer is option 1)

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