The volume of the cylinder is V = πr<span>²h. For a circumscribed cylinder, we know that in a circumscribed cylinder, the height of a cylinder is twice of its radius as shown in the figure. So, V = </span>πr²(2r) = 2πr<span>³ </span>Finally, 1458π = 2πr³ r³ = 729 r = 9 cm
That is the answer. Hope this helps <span>✌️</span>☺️✌️