Easy math please help find volume of a cylinder and show work

Answer:
[tex]500\pi[/tex] cubic inches
Step-by-step explanation:
Area of circle = [tex]\pi r^{2}[/tex]
r = 5 inches
Area of circle = 78.5398... inches^2 or [tex]25\pi[/tex]
Volume = Area of circle x Length
Volume = 78.5398... x 20 = 1570.7963... or [tex]500^{2}[/tex]