Answer: 2.26
Step-by-step explanation: The formula for finding out the radius of a cylinder when given the volume and height is (r) = √(V / π × h)
V is the volume, π is equal to 3.14, and h is the height
(r) = √(320/ π × 20)
(r) = √(320/ 3.14 × 20)
(r) = √(320/ 62.8)
(r) = √(5.09)
(r) = 2.256
when you round 2.256 to the nearest hundredth is 2.26 cm
I hope this helps