Answer:
The new length is 13.5 meters 
Step-by-step explanation:
Here, we are interested in calculating the new length of the cloth she wants to use 
What we know from the question is that she is making a reduction of 10% from an initial of 15 meters 
Thus, the length she is to use can be calculated by first getting what 10% of 15 meters is 
Mathematically, that would be ;
10/100 * 15 = 1.5 meters
We now subtract this from the total of 15 meters
= 15 meters - 1.5 meters = 13.5 meters 
 
        
             
        
        
        
Answer:
B. 22
Step-by-step explanation:
Hope this helps! Ask me anything if you have any quistions!
 
        
             
        
        
        
Answer:
A
Step-by-step explanation:
 
        
             
        
        
        
The formula for surface area of a sphere: A = 4 pi r^2.  
Since the radius is 30 m then A = 4pi30^2. 
 30^2 x 4 =3600
 A=3600pi m