# Distances 79974

The picture shows three villages, A, B, and C, and their mutual air distances. The new straight railway line is to be built so that all the villages are the same distance from the line and that this distance is the smallest possible. How far will they be from the track?

a = 9 km

b = 12 km

c = 15 km

a = 9 km

b = 12 km

c = 15 km

## Correct answer:

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### You need to know the following knowledge to solve this word math problem:

**geometry**- line
- line segment
**arithmetic**- square root
**planimetrics**- right triangle
- area of a shape
- triangle
**basic functions**- reason

### Units of physical quantities:

### Grade of the word problem:

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