# Parallelogram 6049

Calculate the area of the parallelogram if a = 57cm, the diagonal u = 66cm, and the angle against the diagonal is beta β = 57° 43'

## Correct answer:

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

**planimetrics**- right triangle
- area of a shape
- triangle
- The Law of Sines
- parallelogram
**numbers**- fractions
**goniometry and trigonometry**- sine

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