Answer:
The answer to your problem is, 39 kilometers
Explanation:
We know that 1 centimeters on a map is 13 kilometers based on what the question is saying.
So we need to multiply 13 x 3 since in the question it quotes " 3 cm apart on a map . . . "
So lets do some multiplying:
13 x 3 =
3 x 10 = 30.
3 x 3 = 9.
30 + 9 = 39.
Thus the answer to your problem is, 39 kilometers