If two cords are the same distance from the center of a circle than both cords are congruent 
        
                    
             
        
        
        
Answer:
100
Step-by-step explanation:
10 + 45*2
10 + 90
100
 
        
                    
             
        
        
        
Answer:
The surface area is 78 unit square. 
Step-by-step explanation:
Given : The surface area for a rectangular prism with a square base is  .
.
To find : What is the surface area if s=3 and h=5?
Solution : 
The surface area for a rectangular prism with a square base is 
Substitute, s=3 and h=5




Therefore, The surface area is 78 unit square.
 
        
             
        
        
        
Answer:
-4a/-8 +-12a
Step-by-step explanation:
I'm assuming its just asking you to put it down and now solve it so, I plugged in the top to the bottom, and multiplied it all; getting ^, if its asking for a more simplified answer it would be a/2 + 12a ... I think