Answer:
answer is 75 degree
Step-by-step explanation:
you will better understand by this
 
        
                    
             
        
        
        
Answer:
 the surface area of the square pyramid is 576.66 cm^2
Step-by-step explanation:
The computation of the surface area of square pyramid is given below:
A = a^2  + 2a × √a^2 ÷ √4 + √h^2
where
a = 12 cm
h = 17 cm
Now put the value of a and h in the above formula 
= 12^2 + 2(12) × √12^2 ÷ √4 + √17^2
= 576.66 cm^2
hence, the surface area of the square pyramid is 576.66 cm^2
 
        
             
        
        
        
Answer:
Discount: 
$2.85
final price 
$54.15
Step-by-step explanation:
Discount = Original Price x Discount %/100
Discount = 57 × 5/100
Discount = 57 x 0.05
You save = $2.85
Final Price = Original Price - Discount
Final Price = 57 - 2.85
Final Price = $54.15
 
        
             
        
        
        
Answer:
-23
Step-by-step explanation:
- 4 ( 8 ) + 9
- 32 + 9
- 23