Answer:
This is the exact 38792.386086527 inche[tex]s^{3}[/tex]
hoped this helped.
38,772 in. Cubed.
Step-by-step explanation:
4/3 π r^3
3.14 to estimate for π.
4/3•π•21^3
4/3•π•9261
4.1866•9261
38,772.1026
Rounded: 38,772
