Since this is a right triangle we can use the Pythagorean Theorem:
h^2=x^2+y^2, and since x and y are both opposite 45° angles, they are equal to one another, so we have:
h^2=2x^2  since h=3
2x^2=9
x^2=9/2
x=√(9/2)
x=3√(1/2)  if we rationalize the denominator by multiplying the fraction by √2/√2 we get
x=(3√2)/2
        
             
        
        
        
The mean, because data distribution is skewed to the right. You answer is correct
        
             
        
        
        
Answer:
 You would need transformations to solve this. 
 
        
             
        
        
        
area square: 9in×9in = 81in
area triangle: [9in×(13in-9in)]/2
= (9in×4in)/2
=36in/2
=18in
green area: 81in+ 18in= 99in
 
        
                    
             
        
        
        
They are the same one is just curved. 
Hope this helped!!