1) I made a Constant Using " C " but I am not sure how it will work out ,, [br][br]2) This is from after I factored " c " [br][br]3) Significant Figures: Integer Level Only - But you could certainly use all the numbers but Integers is your Round Off Rule[br][br]4) Step Two you have to Choose a " diameter " and in step three you choose " Time "[br][br]4a) At after the Conversion Factor Step is Where you choose a number to " investigate " that is what the formula is for; Step 3 ;;; Choose Variable to investigate.