Let the height of the rectangle = h
2b + 2h = 100
2(38) + 2h = 100
 2h = 100 - 76
 h = 12mm
area of rectangle = base x height 
 = 38 x 12
 = 456mm²
 
        
                    
             
        
        
        
Answer:
Seeing that we have a shared hypotenuse and two sides that are congruent, the theorem that we can use is the HL Theorem.
Step-by-step explanation:
mark brainliest :)
 
        
             
        
        
        
Answer:
0.56
Step-by-step explanation:
                                   sin x
tan x is defined as -------------
                                   cos x
and we can solve this for sin x:  sin x = (cos x)(tan x) 
which here is:  sin x = 0.83(0.67) = 0.56 (rounded up from 0.5561)
 
        
             
        
        
        
Calculate the number of people who sat on the visitors' side:
 8644
-5100
--------
 3544
Now divide 3544 people by 8 sections:
3544 people
----------------- = 443 per section.
  8 sections