2006-12-12 15:58:41 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
12
2006-12-12 16:01:18 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Volume of cylinder is 2pi * radius^2 multiplied by height
1296 pi = 2 * pi * r^2 * 9
72 = r^2
or r = 6 root 2
or r = 6*1.414
or r = 8.485 units
2006-12-13 00:05:17 · answer #2 · answered by sudhir49garg 2 · 0⤊ 0⤋
Please use "pi" for 3.1416....
Right cylinder volume V = pi r^2 h
Then 1296 pi = 9 pi r^2
Dividing thru 144 = r^2
So r = 12
2006-12-13 00:04:23 · answer #3 · answered by cattbarf 7 · 0⤊ 0⤋
V=1296Ï=Ïr^2 h=Ïr^2*9
144=r^2
r=12
2006-12-13 00:28:10 · answer #4 · answered by yupchagee 7 · 0⤊ 0⤋
(pi * r) squared * H = V
(pi * r)squared * 9 = 1296 pi
divide by 9
(pi * r) squared = 144pi
take the square root of each side
pi * r = 12 pi
divide by pi and they cancel
r = 12
2006-12-13 00:07:00 · answer #5 · answered by Matt S 2 · 0⤊ 0⤋