Answer:
I think its 8a because in a regular octagon we have 8 sides.
 
        
             
        
        
        
1 : you would use a graduated cylinder . 2 : , you would use a yard stick or maybe a ruler if you are not able to find one. You can also use a meter stick. 
 
        
             
        
        
        
To work out the distance of the path, you need to find out the circumference.
Formula for circumference = pi multiplied by the diameter
So you simply do:
pi multiplied by 1.4 miles
And you should get:
4.39822971503... miles
Simply round the result to an appropriate value (e.g. 3 decimal places).
Answer: 4.398 miles (to 3dp)
Hope the answer helps :)
        
             
        
        
        
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : 
                    <span> 3*x+23-(56)=0 </span>