MATHS MONGU COLLEGE
posted by barotseland network .
A cylinder whose volume is 386,000m3 has it's length 1.3 times its diameter. calculate the diameter of the cylinder given that the volume V = 3.142r2h.

v = πr^2 h
Just plug in the known values
386000 = π r^2 (1.3*2r) = 2.6π r^3
r^3 = 386000 / 2.6π
r = 36.15, so
d = 72.30