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半径为15 cm,圆心角为216°的扇形围成圆锥的侧面,则圆锥的高是( )
A.14 cm B.12 cm C.10 cm D.8 cm
A. 14 cm B.12 cm C.10 cm D.8 cm
A.14 cm B.12 cm C.10 cm D.8 cm