Circular 4690
The cone shell with a base radius of 20 cm and a height of 50 cm unfolds into a circular cutout. How big is the center angle of this cutout?
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
- solid geometry
- cone
- surface area
- planimetrics
- Pythagorean theorem
- right triangle
- triangle
- basic functions
- ratio
Units of physical quantities:
Grade of the word problem:
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