Answer:
Step-by-step explanation:
Rationalize the denominator of b. So, multiply the numerator and denominator by 

Now, find a +b

Combine like terms
 
Now find (a + b)²
(a +b)² = 
           
Hint: 
 
        
             
        
        
        
Answer:
Option d is the correct answer.
Step-by-step explanation:
tan A = 24/7
 
        
                    
             
        
        
        
Answer: 1639.08
Step-by-step explanation: To find the surface area of a cylinder, multiply 2(3.14)times the radius squared. Your answer is 508.68. Then multiply 2(3.14)times the radius and the height. You'll get 1130.08. add the answers you got from both equations together. That's the surface area of your cylinder. If you have any more questions, please let me know. 
 
        
             
        
        
        
Answer:
1.6cm:
Step-by-step explanation:
1cm = 2m
2 divided by 1 = 2
3.2 divided by 2 =1.6
1.6cm
 
        
             
        
        
        
All you do is add up all your sides! So if your shape has 4+4+5+5 = 18. All you do is add them up!