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英语翻译The region bounded by a quadrant of a circle at its extr

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英语翻译
The region bounded by a quadrant of a circle at its extremities revolves through 360± about
one of these tangents.Show that the volume of the solid generated is (5/3/3-pie/2)piea3,and the
area of its curved surface is pie(pie -2)PIE3.
英语翻译The region bounded by a quadrant of a circle at its extr
该区域范围内的一象限的一个圆圈围绕在其四肢通过360 ±约
这些切线.表明,体积固体产生( 5/3/3-pie/2 ) piea3 ,和
地区的曲面是馅饼(馅饼-2 ) PIE3 .