02-16-2017, 04:17 PM
(02-16-2017, 05:19 AM)RONIT SHARMA Wrote: Consider an infinite number of cylinders, first of radius 1 m and height 1 m, second cylinder of 0.5 height and 0.5 radius placed above it, find sum.of inifinite series.ipi r^2 h
If I am not wrong, Sn=(a1/1-r)-1
But what is the value of r? Please solve it.
pi(1^3 + 0.5^3 + 0.25^3 +.................)
pi(1^3+(1/2)^3 + (1/4)^3 + ...............)
pi(1^3+(1/8) + (1/8)^2 + (1/8)^3+.....) use formula (1-x)^-1
here x=(1/8)
final answer 3.59 something