Jawabanmu

2014-06-03T20:21:09+07:00
Volume = pi x r2 x t
770 = 22/7 x r2 x 5
770 = r2 x (22/7 x 5)
770 = r2 x 15,7
r2 = 770 : 15,7
r2 = 49
r = (akar dari 49) = 7

diameter = r x 2
                  = 7 x 2 = 14 meter.
2014-06-03T21:10:13+07:00
Tambahan: 770 liter = 770 dm^3 = 0,77 m^3