# Poplar shadow

The nine-meter poplar casts a shadow 16.2 m long. How long does a shadow cast by Peter at the same time if it is 1.4 m high?

## Correct answer:

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

**geometry**- similarity of triangles
**planimetrics**- triangle
**basic functions**- reason
- inverse proportion
- simple proportion

### Units of physical quantities:

### Grade of the word problem:

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