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