A surveyor walks 12 km east and then 5 km north. How far is she from her starting point?

Correct answer: D. 13 km

The two legs are 12 km and 5 km, so the distance is √(12² + 5²) = √169 = 13 km, to the northeast. The 5-12-13 right triangle is worth remembering, like 3-4-5.

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Answer and explanation

The correct answer is D. 13 km

The two legs are 12 km and 5 km, so the distance is √(12² + 5²) = √169 = 13 km, to the northeast. The 5-12-13 right triangle is worth remembering, like 3-4-5.

Topic: Direction and Distance MCQs · Subject: Analytical Ability