Sphere
The radius of the sphere is the only unknown variable need to find the volume of a sphere.
Step-by-step explanation:
Sphere is a geometrical three dimensional round figure with every point on its surface equidistant from its center. It is a three dimensional representation of a circle. A line which connects from the center to the surface is called radius of the sphere.The diameter of the sphere is the longest straight line which passes through the center of the sphere.
The volume of sphere is given by:
Volume of sphere(V) = 
where V is the volume of the sphere
r is the radius of the sphere
 = 3.14
  = 3.14
Hence the only unknown variable to find the volume of a sphere is the radius.
 
        
             
        
        
        
This image is not loading therefore no one can answer it
        
             
        
        
        
Answer:
i think it is 61
Step-by-step explanation:
 
        
             
        
        
        
Answer:
y = - 400 + 700x
Step-by-step explanation:
Nour's altitude increased at a constant rate from the Dead Sea up to Amman.
Initially, her altitude was 400 meters below from the sea level and then she arrived at an altitude was 1000 meters above sea level arrived to Amman, 2 hours later.  
So, she moves (400 + 1000) = 1400 meters in 2 hours.
Therefore, her rate of change of altitude is  meters per hour.
 meters per hour.
Therefore, if y represents Nour's altitude in meters relative to the sea level after x hours then the relationship between the altitude and number of hours is given by  
y = - 400 + 700x  (Answer)
 
        
                    
             
        
        
        
Answer:
see attached
Step-by-step explanation: