Answer:
A 
Step-by-step explanation:
When you rotate the shape it will be the same as it was before .
 
        
                    
             
        
        
        
Answer:
C. the circumference of a circle
Step-by-step explanation:
The perimeter of a square is the length of the outside, which is found by adding all the side lengths. The circumference of a circle is similar because it is also the length of the outside of the shape.
 
        
             
        
        
        
The first question each friend gets 1/8 of the whole pizza 
for half of the pizza each friend gets 1/4 so that times 2 equals 1/8
The second question one person gets 1/15 of the brownie pan
1/5 times 3 equals 1/15
 
The third question 1/3 cup one serving 1 cup three servings three times six equals 18 servings 
The fourth question 1/5 cup one muffin one cup 5 muffins five times nine equals forty-five muffins
Hope this helps