What system is occurring over this area? What type of front is affecting this area? Which weather phenomenon is the area experiencing

When you answer this can you explain

The radius of a sphere is 3 inches. which represents the volume of the sphere?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.