A man walks West 10 miles, then turns right towards North and walks another 10 miles. How far is he from the place he started walking.
Choose the correct option: A) 11.11 B) 10 C) 14.14 D) 16.15 E) 1

Rationale: as we can see the man moves in configuration of a right angle triangle . the man has walked on the sides and now we need to calculate the length of the hypotenuse which is the distance of the man from the starting point to his current location . since we know the length of two sides , we can find the length of hypotenuse . as per pythagoras : a ^ 2 + b ^ 2 = c ^ 2 a = 10 b = 10 10 ^ 2 + 10 ^ 2 = c ^ 2 100 + 100 = c ^ 2 200 = c ^ 2 c = squareroot 200 c = 14.14 miles ans : c
Answer: C