Question

A man rides 10 km east and turns 12 km north. How far is he from the starting point?

A.10.36 km

B.12.86 km

C 14.25 km

D 15.62 km

Answer 1

$$d=\rm\sqrt{(10\: km)^2+(12\: km)^2}=15.62\: km$$

Answer: D