Answer:
Step-by-step explanation:
Pythagorean Theorem: a² + b² = c²
To find the distance between towns B and C, you'd need to use the Pythagorean Theorem. Draw a right triangle, and label the points.
a² + b² = c² ↓
9² + 12² = c² ↓
81 + 144 = 225 ↓
√225 = 15
c = 15
Hope this helps,
♥A.W.E.S.W.A.N.♥
(P.S. If you have anymore Pythagorean Theorem questions, I'd love to help.)