Answer:
Radius of large cylinder [tex]= 10.39 feet\\[/tex]
Step-by-step explanation:
Volume of the larger tank is three times the volume of smaller tank
Volume of smaller tank
[tex]= \pi r^{2} h\\= (3.14) * 6^{2} * 20\\= 2260.8 ft^{3} \\[/tex]
Volume of larger tank
[tex]= 3 * 2260.8 ft^3\\= 6782.4 ft^3\\[/tex]
Or it can also be written as
[tex]\pi r^{2} h = 6782.4 ft^3\\(3.14) * ( r^2) 20 = 6782.4 ft^3\\r^2 = 108\\r = 10.39[/tex]
