Answer:
D
Step-by-step explanation:
D is the correct answer 
 
        
             
        
        
        
Answer:
it can be use in equation 
An irrational number is a number that cannot be expressed as a fraction for any integers and. . Irrational numbers have decimal expansions that neither terminate nor become periodic. 
 
        
             
        
        
        
Answer:
a) 12cm
b) 360cm²
c) 2160cm cubed
Step-by-step explanation:
a)
you would use Pythagoras theorem  for A
so half of 18 is 9
15² - 9² = 144
the square root of 144 is 12
the height is 12cm
b)
18 x 20 = 360cm²
c)
csa x L
csa = b x h divide by 2
18 x 12 = 216cm²/2 = 108cm²
108xm² x 20cm = 2160cm cubed
 
        
             
        
        
        
Answer:
Step-by-step explanation:
{ - 9, - 4, - 1}