将半径为72cm的扇形OAB剪去小扇形OCD,余下扇环ABCD的面积为648πcm2.,围成一个圆台,圆台的下底上底半径之差是6cm,求圆台的高
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![将半径为72cm的扇形OAB剪去小扇形OCD,余下扇环ABCD的面积为648πcm2.,围成一个圆台,圆台的下底上底半径之差是6cm,求圆台的高](/uploads/image/z/12081801-57-1.jpg?t=%E5%B0%86%E5%8D%8A%E5%BE%84%E4%B8%BA72cm%E7%9A%84%E6%89%87%E5%BD%A2OAB%E5%89%AA%E5%8E%BB%E5%B0%8F%E6%89%87%E5%BD%A2OCD%2C%E4%BD%99%E4%B8%8B%E6%89%87%E7%8E%AFABCD%E7%9A%84%E9%9D%A2%E7%A7%AF%E4%B8%BA648%CF%80cm2.%2C%E5%9B%B4%E6%88%90%E4%B8%80%E4%B8%AA%E5%9C%86%E5%8F%B0%2C%E5%9C%86%E5%8F%B0%E7%9A%84%E4%B8%8B%E5%BA%95%E4%B8%8A%E5%BA%95%E5%8D%8A%E5%BE%84%E4%B9%8B%E5%B7%AE%E6%98%AF6cm%2C%E6%B1%82%E5%9C%86%E5%8F%B0%E7%9A%84%E9%AB%98)
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