Answer:
j. 1st, 2nd and 3rd
Step-by-step explanation:
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2*2*4+2*2*24+2*4*24
16+96+192=304
304 is the answer
        
             
        
        
        

 <=> cosx = +1/2 or cosx = -1/2;
cosx = +1/2 => x = +π/3 + 2kπ, where k is an integer or x = -π/3 + 2kπ, where k is an integer;
cosx = -1/2 => x = +2π/3 + 2kπ, where k is an integer or x = -2π/3 + 2kπ, where k is an integer;
 
        
                    
             
        
        
        
Answer:
36
Step-by-step explanation: