We want to find the combined volume of 3 tennis balls. We will get that the combined volume is 493.7 cm^3
First, remember that for a sphere of diameter D, the volume is:
[tex]V = \frac{4}{3}*3.14*(\frac{D}{2})^3[/tex]
Where 3.14 is pi.
Here we know that the average diameter of a tennis ball is 6.8cm, then we can replace that in the above equation to find the volume (in average) of a single tennis ball:
[tex]V = \frac{4}{3}*3.14*(\frac{6.8cm}{2})^3 = 164.5 cm^3[/tex]
Now, in 3 balls of tennis, the combined volume will be 3 times the above one, this is:
[tex]3*V = 3*164.5cm^3 = 493.7 cm^3[/tex]
If you want to learn more about volumes, you can read:
https://brainly.com/question/10171109
