Question 93229
First, find the volume of one cylindrical tank:
{{{V = (pi)r^2h}}} where: r = radius of the circular base and h = the height of the tank.
Radius = half the diameter.
r = D/2 = 6/2 = 3 ft.
h = 4 ft.
Use{{{(pi) = 3.14}}} as an approximation.
The volume of one tank is:
{{{V = (3.14)(3)^2(4)}}}
{{{V = 113.04}}}cu.ft. Multiply this by 7 to find the volume of 7 tanks.
{{{V[7] = (7)(113.04)}}}
{{{V[7] = 791.28}}}cu.ft.
If 1 cu.ft = 7.5 gallons of liquid fertilizer, then:
791.28 cu.ft. = (7.5gal/cu.ft)(791.28cu.ft.) gallons.
This equals 5934.6 gallons.
So, the 7 tanks will hold 5934.6 gallons of liquid fertilizer.