# A chord

In a circle radius of 6 cm, a chord is drawn 3 cm from the center. Calculate the angle subtended by the cord at the center of the circle

Hence find the length of the minor arc cut off by the chord.

Hence find the length of the minor arc cut off by the chord.

### Correct answer:

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

**planimetrics**- right triangle
- circle
- triangle
- triangle inequality
- circular arc
- chord
**goniometry and trigonometry**- cosine
- arccosine

#### Units of physical quantities:

#### Grade of the word problem:

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