Question

Find the perimeter of square whose diagonal is 10cm

Answer 1

Answer:

20root2

Step-by-step explanation:

diagonal length =

$\sqrt{2} side$

$1 0 = \sqrt{2} a$

$a = 5 \sqrt{2}$

$perieter = 4a$

$= 4(5 \sqrt{2} )$

$= 20 \sqrt{2}$