Question

if the area of square is 392 sq.cm, then it's diagnol is​

Answer 1

$\huge\mathfrak\red{Answer :) }$

Let a be the side of a square. Then area = a^2 = 392.

When the side = a, the diagonal = a rt2. Therefore, diagonal squared = 2a^2 = 2(392) since a^2 = 392.

So, diagonal squared 2(392) = 2(2)(14)(14).

Hence, diagonal = 2(14)=28.