Answer:
18π
Step-by-step explanation:
You have to multiply the height and the width together and then multiply by pi but since it is in terms of pi it is 18π
 
        
             
        
        
        
Answer:
The number 3 is the stem. 
The number 4 is the leaf. 
Step-by-step explanation:
The Stem and Leaf Plot is a mathematical table used for the graphical representation of a data set. It involves splitting each data value into a stem (typically the first number, on the left) and a leaf (the last number, on the right).
The stem list is used for grouping data value downwards while the leaf values move rightward from its respective stem values and it's used for showing each data value within a group.
Also, the key of a stem and leaf plot is used as a guide on how to read the data set.
For example, the key for a stem and leaf plot is 3|4. Thus, the number 3 is the "stem" and the number 4 is the "leaf."
 
        
             
        
        
        
Rise mean how many units you move up or down from point to point. 
        
                    
             
        
        
        
10.2 is greater because 10.2 is 10+.2 whereas 10 is just 10
10.2 has that .2  which makes it greater than 10