Answer:
ow do you find arc length without the radius?
To calculate arc length without radius, you need the central angle and the sector area:
Multiply the area by 2 and divide the result by the central angle in radians.
Find the square root of this division.
Multiply this root by the central angle again to get the arc length.
The units will be the square root of the sector area angle.
Check your result with Omni Calculator.
Or the central angle and the chord length:
Divide the central angle in radians by 2 and perform the sin function on it.
Divide the chord length by double the result of step 1. This gives you the radius.
Multiply the radius by the central angle to get the arc length.
Check your result with Omni Calculator
Step-by-step explanation:
 
        
             
        
        
        
Is there supposed to be a picture?? I see nothing im sorry. But i can help u cause this is just surface area, quite easy. 
I will just give you the formula for surface area of a RECTANGULAR prism:
2 ( width x length + height x length + height x width) or just : 2 (wl + hl + hw)
Have a nice day
        
                    
             
        
        
        
Answer:
theres no solution 
Step-by-step explanation:
There are no values of  x  that make the equation true.
No solution
 
        
                    
             
        
        
        
The binomial distribution is given by, 
P(X=x) =  

q = probability of failure = 1-0.2 = 0.8
n = 100
They have asked to find the probability <span>of obtaining a score less than or equal to 12.
</span>∴ P(X≤12) = 

                    where, x = 0,1,2,3,4,5,6,7,8,9,10,11,12                  
∴ P(X≤12) = 

 + 

 + 

 + 

 + 

 + 

 + 

Evaluating each term and adding them you will get,
P(X≤12) = 0.02532833572
This is the required probability.