SSC Steno Grade C and D 14 Sep 2017 Shift 1 Paper

Question : 43 of 200

Marks: +1, -0

Rohini walks 10 km north andturns right. She walks 10 kmand then turns left. She walks10 km and then turns rightand walks 10 km more. Howfar (in km) is she from herstarting point?

20
$10√2$
$20√2$
40

Validate

Solution:

AE = √{(AF)^2 (FE)^2}

√{( 20 )^2+(20)^2}

√(400 + 400) = √800

√(400×2 )= 20√ 2

km.

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