Asphere and cylinder have the same radius and height. the volume of the cylinder is 30m^3. what is the volume of the sphere?

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis.how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?