Answer:
Diameter of tank = 19.5 ft
Step-by-step explanation:
Volume of cylinder = Base area x Height.
Base area = Area of circle
[tex]\texttt{ Area of circle}=\frac{\pi d^2}{4}[/tex]
Height = 20 ft.
Volume of tank = 6000 cubic feet .
[tex]\texttt{ Volume of cylinder = Base area x Height.}\\\\6000=\frac{\pi d^2}{4}\times 20\\\\d^2=381.97\\\\d=19.5ft[/tex]
Diameter of tank = 19.5 ft