Tower
How many m2 of the copper plate should be replaced on the roof of the conical tower shape with a diameter 23 m, and the angle at the axial section's vertex is 119°?
Correct answer:

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Try conversion angle units angle degrees, minutes, seconds, radians, grads.
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arithmeticsolid geometryplanimetricsgoniometry and trigonometryUnits of physical quantitiesGrade of the word problem
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