cylinder volume=2565
volume=base area*hite & base area=pi*rad*rad
many possabel kombo:
if r=1, base area=pi=3.141592654..., so hite=2565/3.14159...=816.464859
if r=2, base area=4pi, & hite=204.1162148
if r=3, base area=9pi, & hite=90.71831767
& so forth