What is circumference of the circle if the sphere volume is 555cm
also how many mins are in 5 galactic hours
also heeellllp
1-Volume of sphere=4/3.Pi.r^3
555=4.188790 . r^3
r=(555/4.188790)^1/3
r=5.1
Circumference=5.1 X 2 XPi=32.044 cm
2- I don't know what you mean by "galactic hours", but terrestrial hours=5 X 60=300 minutes.