Answer:
x=24.621
Step-by-step explanation:
tan(72)=x/8
tan(72)×8=x
x=24.621
 
        
             
        
        
        
Answer:
113.1cm
Step-by-step explanation:
area=  r²
r²
r= half the diameter r=6
a= 6²
6²
a= 36
36
a=113.1 cm
 
        
             
        
        
        
Answer:
If a is 1.. we substitute one in every a in g(a)
4 * 1 + 16
4+ 16 = 20
g(a)= 20
f(20)
-16 + 20 = 4
and 4/4 = 1
so f (g (a)) = a
Step-by-step explanation: