The diagonal of a square is $10\sqrt{2}$ cm. The side of the square is:

The diagonal of a square is $10\sqrt{2}$ cm. The side of the square is:
  1. $5$ cm
  2. $10$ cm
  3. $20$ cm
  4. $5\sqrt{2}$ cm

Solution

Diagonal of a square $= s\sqrt{2}$. So $s\sqrt{2} = 10\sqrt{2} \Rightarrow s = 10$ cm.

Asked in: IMO

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