The answer is 7.85 
First, you divide the diameter by two to get the radius (2.5) and then you multiply by pi(3.14) to get 7.85
        
             
        
        
        
see the attached figure to better understand the problem
we have that

Step 1
<u>Find the value of AC</u>
we know that
in the right triangle ABC

substitute the values in the formula

Step 2
<u>Find the value of BC</u>
we know that 
in the right triangle ABC
Applying the Pythagorean Theorem

substitute the values

Step 3   
<u>Find the value of BD</u>
we know that
in the right triangle BCD
Applying the Pythagorean Theorem

substitute the values   


therefore
<u>the answer is</u>
the length of BD is 11.93 units
 
        
                    
             
        
        
        
Easy one....
58
There is no difficult explanation. It’s always the left end of the box and whisker plot.
        
             
        
        
            
            
                Find the mean, median, and mode for 0, 4, 6, 11, 9, 8, 9, 1, 5, 9, 7. Round to the nearest tenth if needed. 
                snow_lady [41]             
         
        
Answer:
6
Step-by-step explanation:
you add them all up and divide it by how many numbers there are 
 
        
             
        
        
        
(5,5) - (1,5) = (4,5) is the answer