this week in math 10, i learned how to find the volume and surface area of a sphere, to find the SA (surface area) you do 4 times /pi times the radias squared. to find the volume you multiply by 4 over 3 by /pi then you multiply it by the radius cubed.

a question i had a problem with was **question 9 of lession 9** where you have to find the diameter when you only have the volume, when i got help with it i realized it is super easy you just divide by the first part of the formula (the 4 over 3 and /pi) then you square root the answer to find the radius then multiply it by 2 to find the diameter.