# Diamond ABCD

In the diamond ABCD, the diagonal e = 24 cm, and the size of angle SAB is 28 degrees, where S is the intersection of the diagonals. Calculate the circumference of the diamond.

### Correct answer:

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

**planimetrics**- Pythagorean theorem
- right triangle
- perimeter
- triangle
- rhombus
- diagonal
**goniometry and trigonometry**- cosine

#### Units of physical quantities:

#### Grade of the word problem:

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