Step-by-step explanation:
please see in the picture below.All step by step procedure
Step-by-step explanation:
Given that,
The area of a blackboard is 
The area of poster is 
We need to find the unit rate of the blackboard's area to the poster's area. So, it can be calcualted by dividing blackboard's area to the poster's area.
So,

So, the rate of
.
88 inches is the answer
the area of the circular base is 25pi, since diameter is 10 that means radius is 5, raise it to second power and multily pi.
divide 2200pi by 25pi
therefore its height is 88 inches
She had 2.55 pounds left.