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The length of diagonal of a square whose...

The length of diagonal of a square whose area is `64 m^2` is:
उस वर्ग के विकर्ण की लंबाई ज्ञात करें जिसका क्षेत्रफल 64 वर्ग मीटर है|

A

`4 sqrt 2` m

B

`8 sqrt 2` m

C

4 m

D

8 m

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