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
问题描述:
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
答
圆锥底面半径6,横截面底面半径4,横截面到底面的距离是8,求圆锥高度
根据相似三角形的原理:(高度-8)/高度=4/6
求得高度=24
答
翻译:对一个圆锥体底半径为6和半径的一个平行的横截面为4。如果基地和横截面之间的距离为8。圆锥体的高度是多少?
根据题可设圆柱的高为H, 则有H/(H-8)=6/4 所以 H=24 因此该题选(e)
答
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