Answer:
The distance from A to C is 5 km
Explanation:
If you draw out the path the boy walks, it creates a right triangle, with 3 km and 4 km as the base and height and the hypotenuse as the unknown distance from A to C. Using the pythagoream
, we can solve for c by filling in the a and b (the base and height)
+
=

9 + 16 =

25 =


5 = c