Hey!! 
the answer is 0.02 !. 
if helped, brainliest
        
                    
             
        
        
        
Let's assume 
shorter side as x
so, first side =2x
third side =x+19
now, we can find perimeter of triangle
perimeter of any triangle is 
first side + shortest side + third side
so, we get 

we are given perimeter=187
so, we can set it to 187
and then solve for x





so, 
shortest length is x=42 feet
First side =2x=2*42=84feet
third side =x+19=42+19=61 feet
so, dimensions are 
first side is 42 feet
second side is 84 feet
third side is 61 feet................Answer
 
        
             
        
        
        
Answer: I know 12 is right
Step-by-step explanation:
 
        
             
        
        
        
Whenever you solve an equation with a single variable you need to isolate the variable by itself on one side of the equal sign.  Just be sure that whatever operations you perform on one side you perform on the other sides as well.
62x=1  divide both sides by 62
x=1/62
        
             
        
        
        
385.6 square feet is the answer