# Right-angled 80745

The area of a right-angled triangle KLM with a right angle at the vertex L is 60 mm square, and its hypotenuse k is 10 mm long. Triangles KLM and RST are similar. The similarity ratio is k=2.5. Calculate the area of triangle RST.

### Correct answer:

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

**geometry**- similarity of triangles
**algebra**- equation
**planimetrics**- Pythagorean theorem
- area of a shape
- triangle
**basic functions**- ratio

#### Units of physical quantities:

#### Grade of the word problem:

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