Answer:
5
Step-by-step explanation:
We can figure out the length of AB by using the distance formula.

So the distance is 5
Steps to solve:
1/2hb = d²
~Divide 1/2h to both sides
b = 2d²/h
Best of Luck!
Answer:
80
Step-by-step explanation:
because 8 is in tens place
so it´s value is 8*10=80
30 tens=ones is not right so it should be 30 tens=hundreds