A ball shaped like a sphere has a radius of 3.9 centimeters. Which measurement is closest to the volume of the ball in cubic centimeters?

The answer to your question is Volume = 248.29 cm³ ≈ 248 cm³

Step-by-step explanation:

Data

radius = 3.9 cm

pi = π = 3.14

Formula

Volume of a sphere = (4/3)πr³

-Substitution

Volume of a sphere = (4/3)(3.14)(3.9)³

-Simplification

Volume of a sphere = (1.33)(3.14)(59.32)

-Result

Volume of a sphere = 248.29 cm³

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.