Area of a triangle 
A=h x b/2=12 x 5/2=30
 please mark me as brainly  
        
             
        
        
        
Answer:
The radius of the inner circle is 14 ft. Since the outer circle is 3 ft more than the inner circle, its radius is 17 ft. The circumference formula is 2(pi)radius (or 2(22/7)17 in this case). The circumference of the outer circle is 106.85 ft (or 106.9 if rounding). To find the difference, you would subtract the smallest FROM the greatest:
106.85 - 88 = 18.85 ft (or 18.9 if rounding)
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
2√54+5√24
2 * sqrt(9*6) + 5*sqrt(4*6)
2*sqrt(9) *sqrt(6) + 5*sqrt(4) * sqrt(6)
2*3 sqrt(6) + 5*2 sqrt(6)
6sqrt(6)+10sqrt(6)
16sqrt(6)
 
        
                    
             
        
        
        
Answer:
 Labrador retrievers
 Labrador retrievers
Step-by-step explanation:
We know that the mean  is:
 is:

and the standard deviation  is:
 is:

The probability that a randomly selected Labrador retriever weighs less than 65 pounds is:

We calculate the Z-score for X =65

So

Looking in the table for the standard normal distribution we have to:
 .
. 
Finally the amount N of Labrador retrievers that weigh less than 65 pounds is:


 Labrador retrievers
 Labrador retrievers