Answer:
90 cm²
Step-by-step explanation:
Given that both triangles are similar, it follows that the ratio of their area equals the square of their corresponding sides.
Let the area of the other triangle be x. Therefore:


Cross multiply


Divide both sides by 16
90 = x
Area of the other polygon = 90 cm²
 
        
             
        
        
        
240 is the answer to your question just multiply them
        
             
        
        
        
You can use the pythagoras theorem.
20^2=5^2+x^2
x^2=400-25
x^2=375
x = 19.36
20-19.36=0.64 feet
The answer is 0.64 feet :)
        
             
        
        
        
Your equation would look a lot like this 
c(t) = 8.5t + $40
love, the Pineapple.