Question

the diagonal of square is 7 cm what is the side​

Answer 1

side = 7/√2.
bcz √2*side = 7

Answer 2

$\huge\bf{Hello!!}$

let ABCD is a square with diagonal AC=7cm and AB=BC=a

by using Pythagoras theorem..

AB^2+BC^2=AC^2

a^2+a^2=(7)^2

2a^2=49

a^2=49/2

a=7/√2→7√2/2{rationalize)

the side of square will be 7√2/2cm