Ok, 6×25=150, since there are 6 sides, the answer is 150cm.
        
             
        
        
        
Separate the root expression into the two numbers you found as factors, with each number now under its own square root symbol. For example, sqrt(12) = sqrt(4) times sqrt(3). 3) Keep simplifying. The square root of a perfect square becomes just a number, without theradical<span> square root symbol.</span>
        
             
        
        
        
Y=4x+1 is the answer to your question
        
             
        
        
        
At approximately 4.5 hours.
15.75x + 70 = 13.25x + 81
15.75x - 13.25x = 81 - 70
2.5x = 11
x = 4.4 
found to the nearest tenth 4.5