Question 36

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

Solution

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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