Question

the side of cube is 4cm. find its diagonal

Answer 1

Given that side of a cube(a) = 4cm

Diagonal=
$\sqrt{3} a$
Therefore,
d=
$\sqrt{3 } \times 4$
=1.732×4

=6.9

=approximately 7cm.

Hope this helps you.☺

Answer 2

formula of diagonal of square is sq.root 2×a