1) Striangle = 1/2 * (12-8) * 4 = 1/2 * 4 * 4 = 8 km^2
2) Srectangle = 4 * 8 = 32 km^2
3) Sfigure = 8 + 32 = 40 km^2
Number C
 
        
             
        
        
        
You multiply five by 3.75 and you get 18.75 ft. to get yards you divide by three and you get 6.25 yards
        
             
        
        
        
Answer:
a^2*c^2
Step-by-step explanation: im pretty sure this is it
 
        
                    
             
        
        
        
Pythagorean Theorem: a^2 + b^2 = c^2
(5)^2 + (9)^2 = c^2
25 + 81 = c^2
106 = c^2
c = square root of 106
Length of a diagonal of a rectangle is square root of 106.
        
             
        
        
        
Answer:
greatest factor of 72 and 81 is 9. 
Step-by-step explanation:
i got this because 9 is the greatest number when multiplied that will go into both 72 and 81. i solved this by comparing the multiples of 72 and 82. 
hope this helped :))