twice of that Vbig=2*(2048/3)pi Vbig=(4096/3)pi find radius (4096/3)pi=(4/3)pir^3 divide both sides by pi (4096/3)=(4/3)r^3 times both sides by 3 4096=4r^3 divide both sides by 4 1024=r^3 cube root both sides 8∛2=r aprox 10.0794
the answer you are looking for is 8∛2 or 10.0794in or something close to that