Answer:
The radius is 7 feet.
Step-by-step explanation:
I am assuming you meant to write volume of a cylinder is 2155.13 ft cubed.
The general formula for volume of a cylinder is
[tex]V = \pi r^2 h[/tex]
with r the radius, and h the height. We are given V=2155.13 ft^3, and h=2r:
[tex]2155.13 \mbox{ft}^3=\pi r^2(2r)=2\pi r^3\implies r=\sqrt[3]{\frac{2155.13}{2\pi}}\approx 7 \,\,\mbox{ft}[/tex]
The radius is 7 feet.
