直ちょく円えん錐すい

noun

right circular cone

Technical geometry term for a cone whose axis is perpendicular to its circular base.

• 直ちょく円えん錐すいの体たい積せきは、底てい面めんの半はん径けいと高たかさから計けい算さんできる。

  The volume of a right circular cone can be calculated from the radius of its base and its height.