Answer:1
Step-by-step explanation: 1/2 + 1/2 is 1
 
        
                    
             
        
        
        
Answer:
B: 72 
Step-by-step explanation:
Split the shape into separate rectangles! It will make the problem much easier. You can split it so that you will have a 12 x 3 rectangle and a 6 x 6 rectangle because you subtract 3 from 9 and subtract 6 from 12. 
12 x 3 = 36
6 x 6 = 36 
36 + 36 = 72 
Let me know if you're still confused! 
 
        
                    
             
        
        
        
Find all the factors of 32, as they come in pairs. 
The pairs will give you how many rows you can have, as well as the number of stamps in each row.
1x32 would be 1 row, 32 stamps each
2x16 would be 2 rows, 16 stamps each.
4x8 would be 4 rows, 8 stamps each. 
Once you reach the point that it flips around, you can count up all those ways as well. 
8x4 is 8 rows with 4 stamps each
16x2 is 16 rows with 2 stamps each
32x1 is 32 rows with 1 stamp each 
The total number of factor pairs is 6, meaning he can display the stamps in 6 different ways that follow his want of having the same number of stamps in each row. 
        
                    
             
        
        
        
1/5 equals 12 so 12 times 5 is 60 so
a=36
b=24
 Your welcome
        
             
        
        
        
Answer:2349.91 
Step-by-step explanation:
A=2πrh+2πr2=2·π·11·23+2·π·112≈2349.9113