Explanation:
Given that,
The diameter of a tennis ball, d = 2.7 inches
We need to find the number of tennis balls will fit inside of a storage unit that is 4 feet wide, 2.5 feet long, and 2 feet high.
Let there are x number of tennis balls.
![x=\frac{\text{Volume of box}}{\text{Volume of 1 tennis ball}}\\\\x=(4* 2.5* 2)/((4)/(3)\pi * ((2.7)/(3))^3)\\\\x=6.54](https://img.qammunity.org/2022/formulas/mathematics/college/b185bw3m8lkrjaaityl548n083aw8y8m8f.png)
Approximately
x = 7
Hence, there are 7 balls.