If the side of a square is $7$ cm, the length of its diagonal is:

If the side of a square is $7$ cm, the length of its diagonal is:
  1. $7$ cm
  2. $7\sqrt{2}$ cm
  3. $14$ cm
  4. $49$ cm

Solution

Diagonal of a square of side $s$ is $s\sqrt{2}$. Hence diagonal $= 7\sqrt{2}$ cm.

Asked in: IMO

Practice more UNDERSTANDING QUADRILATERALS questions on Aicharya