Question

in the given figure, OA=3cm,and OB=4cm∆|_AOB=90°​

Answer 1

Answer:

what I have to find then if ab=?

by Pythagoras theorem hyp square =side square+ side square

then ab² =ao²+BO²

=3²+4²

9+16=ab²

an=√9+16

√25

=5