Jharkhand PSC Prelim Exam 2008 Solved Paper

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Question : 90 of 100

Marks: +1, -0

If the area of the surface of a cube is 216 sq.m, what will be its volume?

100 cube meters
216 cube meters
480 cube meters
512 cube meters

Solution:

(2) Let cube have a core is

x

{xm}

Surface area of cube

=6 x^{2}=216

sqm.

6 x^{2}=216

x^{2}=36

x=6 {m}

volume of cube

=x^{3}=(6)^{3}

=216

cubic

{m}

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