下面是两道SAT数学练习题，都是选择题，后面附有答案及其解析。SAT数学练习题可以让大家更快更好的了解SAT数学考试的出题方式以及应对方式。下面是详细内容，我们一起来看一下这些SAT数学练习题的吧。

　　1、 Cone A has volume 24. When its radius and height are multiplied by the same factor, the cone’s surface area doubles. What is Cone A’s new volume?

　　(A) 　　(B)48

　　(C) 　　(D)96

　　(E)Not enough information to tell

　　2、 Arectangle stands so that its 6 inch side lies flat against the ground. If the rectangle is rotated around the axis of one of its two 4 inch sides, what is the volume of the resulting cylinder?

　　(A)24Ï€

　　(B)36Ï€

　　(C)64Ï€

　　(D)96Ï€

　　(D)144Ï€

　　Answers

　　1、 C

　　The formula for a cone’s surface area is πr2 + πrl. A cone’s volume is 1/ 3πr2h. So if the dimensions of a cone are multiplied by the same factor, a,

　　then its surface area multiplies by the square of that factor. If the dimensions of a cone are multiplied by the same factor, the volume becomes multiplied by the cube of that factor:

　　In general, for solids, if each dimension of a cone is multiplied by the same factor, the solid’s surface area is multiplied by the square of that factor, and its volume increases by the cube of that factor. If the surface area of Cone A doubles, its dimensions are multiplied by a factor ofThus, the cone’s volume is multiplied by a factor ofCone A’s new volume is

　　2、 E

　　If the rectangle is rotated about a side of length 4, then the height of the cylinder will be 4 and the radius will be 6.

　　Once you visualize the cylinder, you can plug in the values for the volume of a cylinder:

　　以上就是这两道SAT数学练习题的全部内容，后面的答案解析非常清晰详细，便于大家掌握。大家在备考SAT数学练习题的时候，可以根据题目的类别进行更加有针对性的练习，这样就可以找打自己的薄弱环节进行提高。大家也可以参加北京SAT培训班，对SAT数学考试进行更加专业的备考，详细信息。

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