Answer she used 4.5 for each bag.
Step-by-step explanation:
Multiply to dun the area of a triangle
Answer:
The area of the circular cross section of the pipe is 
Step-by-step explanation:
we know that
The area of the circle (cross section of the pipe) is equal to

we have
----> the radius is half the diameter
substitute


You can use both to prove the triangle is congruent.
So either ASA or AAS Theorem.
Hope this helped! :D