SSC CGL 9 Aug 2015 Shift 1 Paper

Question : 111 of 200

Marks: +1, -0

Two poles of height 7 metre and 12 metre stand on a plane ground. If the distance between their feet is 12 metre, the distance between their top will be

15 metre
13 metre
19 metre
17 metre

Validate

Solution:

AB = 7 metre CD = 12 metre
∴ CE = CD – DE
= 12 – 7 = 5 metre
∴ From ΔAEC,
AC =

√{AE^2+EC^2}

√{12^2+5^2}

√{144+25}

√{169}

= 13 metre

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