Because logarithms were a lot less time-consuming than other methods of finding roots. They were also more accurate in the sense that it was harder to make a mistake.
        
             
        
        
        
You know that the sum of the interior angles in a triangle is 180
we will add all the angles,
(x+8)+(2x-8)+(3x-12)=180
x+8+2x-8+3x-12=180    8 and -8 cancel out 
6x-12=180
6x=180+12
6x=192
x=192/6=32
x=32
        
             
        
        
        
Answer:
118.5in
Step-by-step explanation:
Acircle=πr2
=π5^2
=78.5
Arectangle = l *w
= 10*4
 
        
             
        
        
        
Answer:
D 
Step-by-step explanation:
have a good day