20 because of the whole is 40 and the shaded part is by 20 you just take half of 40 and you get 20
        
             
        
        
        
Answer:
   A)  2C
Step-by-step explanation:
The relevant rule of logarithms is ...
   log(x²) = 2·log(x)
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We know that 64 = 8². So, ...
   log(64) = log(8²) = 2·log(8)
We are given that log(8) = C, so 2·log(8) = 2C
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Here, all logarithms are to the base 9. That does not change the relations shown.
 
        
             
        
        
        
Answer:
given in the figure an isosceles right triangle
hence
x = √3
- √3 is a <u>surd</u> it can't be simplified further