# Circle chord

Calculate the length of the chord of the circle with radius r = 10 cm, the length of which is equal to the distance from the circle's center.

### Correct answer:

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

**algebra**- expression of a variable from the formula
**arithmetic**- square root
**planimetrics**- Pythagorean theorem
- right triangle
- circle
- triangle
- chord

#### Units of physical quantities:

#### Grade of the word problem:

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