Question

Runners in a long distance race start out going 8 kilometers east and then head north for the remainder of the race. The finish line is 10 kilometers from the starting line. How far did the runners travel north?

A) 2 km
B) 6 km
C) 10 km

Answer 1

Use Pythagoras theorem to find NE.

Answer 2

so it will be 10

Answer 3

No.\[10^{2}=8^{2}+s ^{2}\]
Calculate s.