Answer:
the answer is b 
Step-by-step explanation:
 
        
             
        
        
        
The summation of the angle measures of a polygon is given by:
180(n - 2).
Thus, we need to find: 1800 = 180(n - 2)
10 = n - 2
n = 12
Therefore, the shape is a dodecagon, and the number of sides it has is 12.
        
             
        
        
        
Answer:
for question 1 the answer is 1.5 cm  
for question 2 the answer is 0.75 cm  
for question 3 the answer is 2.3 inches  
for question 4 the answer is 3.3 inches  
for question 5 the answer is 4 cm  
for question 6 the answer is 0.75 inches
 
        
             
        
        
        
Let length of  the hypotenuse = 3x and length of given leg be x feet.
then (3x)^2 = x^2 + 648
8x^2 = 648
x^2 = 81
so x = 9 and 3x = 27
Hypotenuse is 27 feet and the leg equals 9 feet.
        
             
        
        
        
19.25x Hope this helped you....