Decagon 5145
Find the area of a regular decagon if its side is 10 cm in size.
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
- planimetrics
- polygon
- area of a shape
- triangle
- goniometry and trigonometry
- tangent
Units of physical quantities:
Grade of the word problem:
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