Answer:
Volume = 100 cm³
Surface area of the square pyramid = 145 cm²
Step-by-step explanation:
Given:
Perpendicular height = 12cm 
Square length = 5cm
Find:
Volume 
Surface area of the square pyramid
Computation:
Area of base = side²
Area of base = 5²
Area of base = 25 cm²
Volume = (1/3)(A)(h)
Volume = (1/3)(25)(12)
Volume = 100 cm³
Surface area of the square pyramid = A + 1/2(P)(h)
Perimeter square pyramid = 4(s)
Perimeter square pyramid = 4(5)
Perimeter square pyramid = 20 cm
Surface area of the square pyramid = 25 + 1/2(20)(12)
Surface area of the square pyramid = 145 cm²
 
        
             
        
        
        
Answer:
56
Step-by-step explanation:
A negative times a negative makes a positive, so:

 
        
                    
             
        
        
        
X = 29
61 + 90 = 151
180-151 = 29
        
                    
             
        
        
        
B because absolute value means that the number inside the absolute value brackets is the positive version of the number
        
             
        
        
        
The expression should be (2/h)x(k+8).