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Sat2ogtheradiusofthebaseofarightcircularconeis6andtheradiusofaparallelcrosssectionis4.Ifthedistancebetweenthebaseandthecrosssectionis8.whatistheheightofthecone?a)11b)40/3c)16d)20e)24

题目详情
Sat2 og
the radius of the base of a right circular cone is 6 and the radius of a parallel cross section is 4 .If the distance between the base and the cross section is 8 .what is the height of the cone?a)11 b)40/3 c)16 d)20 e)24
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答案和解析
翻译:圆锥体的底面半径为6,一个平行于底面的截面半径为4,这个截面与地面的距离为8,这个圆锥体的高是多少?
设圆锥体的高度为x,根据两个椎体相似得到方程:6/4=x/(x-8)
解得x=24