Answer:
A  ≈ 35.3 units²
Step-by-step explanation:
Calculate the radius CB using Pythagoras' identity in the right triangle.
CB² + AB² = AC²
CB² + 6² = 9²
CB² + 36 = 81 ( subtract 36 from both sides )
CB²  = 45 = r²
Then area of quarter circle is
A =  × πr² =
 × πr² =  × π × 45 ≈ 35.3
 × π × 45 ≈ 35.3
 
        
             
        
        
        
sorry misread the question
 
        
                    
             
        
        
        
You need to find circumference, so you would multiply the diameter by pi. So your answer is 212pi feet or 666.02 feet
        
             
        
        
        
Answer:
1.
x=-10
x=-6
2.
x=10
x=-3
Step-by-step explanation:
to find the zeros of a function you need to set it equal to zero:
x^2+16x+60=0
then you factor
(x+10)(x+6)=0
then you have to finish factoring/simplifying
x+10=0
   -10
x=-10
x+6=0
  -6
x=-6
and the same thing for number 2
x^2-7x-30=0
(x-10)(x-3)=0
x=10, x=3
 
        
                    
             
        
        
        
Answer:
C
Step-by-step explanation: