Aim: How do we find the surface area and volume of the sphere?

To find the volume of a sphere you must use the formula 4 times pi times the radius cubed divided by 3.

For example:

 

The volume of this sphere would be 4 cubed (64) times 4 (254). After this you could just leave the problem in terms of pi which is 256pi and  then divide it by 3. The final answer would be 85.3pi cm cubed.




To find the surface area of a sphere you must use the formula 4pi times radius squared.




 

Using the same sphere the surface area would be 4 squared (16) times 4 (64). After you find this you could just leave the final answer in terms of pi which is 64pi.




Find the surface area and volume of this sphere: