Question

If length of diagonal of a square is 10 cm then, the length of its side will be---------cm

Answer 1

By Pythagoras theorem,let side be X,
Hsquare=Bsquare+Asquare
10×10=Xsq. +Xsq.
100=2×Xsq.
x=5√2
i.e side=5√2cm.