图中阴影部分以右边直线为轴旋转一周，会成为什么样的几何体？这个几何体的体积是 ．（长度单位：厘米）
直接写得数． 1÷=÷2= 4×20%=×4= （+）×12= 1÷75%= 1%÷10%= 42%﹣0.42=
直接写得数． 12×= 6÷=÷= 1÷×=×18=×0×=×=×26=
直接写出得数．×60= 12÷= 3.14×42=（）2=×=+=÷=÷=
直接写得数．×4=+=+=÷= 25÷=﹣=÷5=×= 2÷=﹣=×12= 2﹣﹣=
口算========
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÷2= 4×20%=
×4=
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= 6÷
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×18=
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×26=
×60= 12÷
= 3.14×42=（
）2=
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