Acity's water tower is in the shape of a sphere with a radius of 15 feet. if the tank is full, what is the exact value of the volume of the tank?
a 225π ft3
b 450π ft3
c 550π ft3
d 4500π ft3

Drag the tiles to the boxes to form correct pairs. not all tiles will be used. match the circle equations in general form with their corresponding equations

Sound travels about 750 miles per hour. a) suppose it takes about 1.5 seconds to hear the echo. how far away is the canyon wall, in feet? for this i got 825 ft b) suppose you stand 1,925 feet from the canyon wall and sound the horn. how long will it take to hear the echo? (i'm stuck on this)

Atest is worth 150 points and contains 70 questions. some questions are worth 2 points and some are worth 4 points. how many are worth 2 and how many are worth 4