Question

Find the length of diagonal, if the perimeter of a square is 12 cm.

• A. $4\sqrt{2}$ cm
• B. $3\sqrt{2}$ cm
• C. $6\sqrt{2}$ cm
• D. $8\sqrt{2}$ cm

Answer 1

The correct option is B $3\sqrt{2}$ cm

Perimeter of square = 12 cm
$⟹4a=12cm$
$⟹a=3cm$
Diagonal of square = $a\sqrt{2}$
Diagonal = $3\sqrt{2}$