Storm and roof
The roof of the building is a cone with a height of 3 meters and a radius equal to half the height of the roof. How many m2 of the roof need to be repaired if 20% were damaged in a storm?
Correct answer:

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You need to know the following knowledge to solve this word math problem:
- solid geometry
- cone
- surface area
- planimetrics
- Pythagorean theorem
- right triangle
- triangle
- basic functions
- percentages
Units of physical quantities:
Grade of the word problem:
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