1. Karthik travelled 3 km east, then took a right and travelled 4kms. How far is he from starting point ?





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  • By: anil on 05 May 2019 02.19 am
    Let Karthik started from point A and travelled 3 km east, then took a right turn from B and travelled 4kms to stop at point C. => $$(AC)^2=(AB)^2+(BC)^2$$ => $$(AC)^2=(3)^2+(4)^2$$
    => $$(AC)^2=9+16=25$$ => $$AC=sqrt{25}=5$$ km => Ans - (D)
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