A net is just a 3D shape made into a 2D shape. So when you have a net, it is easier to make sure you count up all the sides without missing one or counting one twice.
Answer:
13
Step-by-step explanation:
If I read this correctly:
you want to know the square root of 13²?
That would be 13
It is neccesary because you cannot subtract them without having a common denominator so you have to rename 4 1/2
Answer:
which math is this? what is it asking u to do