The diameter of a ping-pong ball is 4 cm about how many balls can fit in a box that measures 12 cm x16cm x 8 cm

(Do I find the volume of both??)

12 cm / 4 cm = 3

16 cm / 4 cm = 4

8 cm / 4 cm = 2

3 * 4 * 2 = 24 balls