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Surface area of a sphere
1)In a Sphere | Sphere Radius = 85 | Calculate Sphere Surface Area = ?? 
  
2)In a Sphere | Sphere Radius = 49 | Calculate Sphere Surface Area = ?? 
  
3)In a Sphere | Sphere Radius = 19 | Calculate Sphere Surface Area = ?? 
  
4)What is the surface area of a sphere of radius 6 inches? 
  
5)What is the surface area of a sphere of diameter 42 cm? Use (22/7) as an approximation for π