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GATE BT-2017 Answer Key | Solutions Discussion
(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.i

If I am not wrong, Sn=(a1/1-r)-1
But what is the value of r? Please solve it.[Image: 983f963f89895b075df06756d41dad27.jpg]
pi r^2 h
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
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Messages In This Thread
RE: GATE BT-2017 Answer Key | Solutions Discussion - by subasuba - 02-16-2017, 04:17 PM
A GATE BT Marks Survey Page - by reviewer21 - 02-28-2017, 05:31 AM
RE: A GATE BT Marks Survey Page - by SunilNagpal - 03-01-2017, 02:09 AM
RE: A GATE BT Marks Survey Page - by CHANDA7 - 02-28-2017, 04:37 PM
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