I think your question is really abot how to calculate ac and ab. Use Pythagoras
a^2+b^2=c^2
in this case sides c is the diagonal and side b is the short side and a is longer side.
So by using pythagoras theorem to get to B to D or C to A.
I would do 30² + 40²= 900 + 1600 = √2500
So she ran
=50+50+30+30
=160
Exactly!
Good job!
Someone has CDD
Yes, they definiely do !! LOL