Question 1059169
{{{Volume = pi*r^2*h}}}


With r = 12'4" /2 = 6'2" = 74 inches, and h = 20' = 240 inches, the volume of the tank is:


{{{Volume = pi*(74)^2*(240) = 4128806.729}}} cubic inches


Since one gallon is equal to 231 cubic inches, the volume of the tank is equal to:


4128806.729 cubic inches / 231 cubic inches per gallon = 17873.6 gallons