Circular sector
I have a circular sector with a length of 15 cm with an unknown central angle. It is created from a circle with a radius of 5 cm. What is the central angle alpha in the circular sector?
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- algebra
- equation
- system of equations
- planimetrics
- circle
- triangle
- circular sector
- circular arc
- circular segment
- goniometry and trigonometry
- cosine
Units of physical quantities:
Grade of the word problem:
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