第八章立体几何考点1空间几何体的结构及其三视图与直观图1.(2015·北京，7)某四棱锥的三视图如图所示，该四棱锥最长棱的棱长为()A.1B.C.D.2INCLUDEPICTURE"E:\\莫成程\\2016\\数学\\文\\SXT106.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT106.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT106.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT106.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT106.TIF"\*MERGEFORMATINETINCLUDEPICTURE"../../三年高考两年模拟系列/文含2016高考题最终版/高考文の完成版/SXT106.TIF"\*MERGEFORMATINCLUDEPICTURE"../../三年高考两年模拟系列/文含2016高考题最终版/高考文の完成版/SXT106.TIF"\*MERGEFORMATINCLUDEPICTURE"../../新建文件夹/新建文件夹/新建文件夹/第八章/SXT106.TIF"\*MERGEFORMATINCLUDEPICTURE"../../新建文件夹/新建文件夹/新建文件夹/第八章/SXT106.TIF"\*MERGEFORMATINCLUDEPICTURE"E:\\莫成程\\2016\\数学\\文\\SXT89.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT89.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT89.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT89.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT89.TIF"\*MERGEFORMATINETINCLUDEPICTURE"../../三年高考两年模拟系列/文含2016高考题最终版/高考文の完成版/SXT89.TIF"\*MERGEFORMATINCLUDEPICTURE"../../三年高考两年模拟系列/文含2016高考题最终版/高考文の完成版/SXT89.TIF"\*MERGEFORMATINCLUDEPICTURE"../../新建文件夹/新建文件夹/新建文件夹/第八章/SXT89.TIF"\*MERGEFORMATINCLUDEPICTURE"../../新建文件夹/新建文件夹/新建文件夹/第八章/SXT89.TIF"\*MERGEFORMAT第1题图第2题图1.解析四棱锥的直观图如图所示，PC⊥平面ABCD，PC＝1，底面四边形ABCD为正方形且边长为1，最长棱长PA＝＝.1答案C2.(2015·重庆，5)某几何体的三视图如图所示，则该几何体的体积为()A.＋2πB.C.D.2.解析该几何体由一个圆柱和一个从轴截面截开的“半圆锥”组成，其体积为V＝π×12×2＋×π×12×1＝2π＋＝.答案B3.(2015·陕西，5)一个几何体的三视图如图所示，则该几何体的表面积为()A.3πB.4πC.2π＋4D.3π＋4INCLUDEPICTURE"E:\\莫成程\\2016\\数学\\文\\SXT59.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT59.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT59.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT59.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT59.TIF"\*MERGEFORMATINETINCLUDEPICTURE"../../三年高考两年模拟系列/文含2016高考题最终版/高考文の完成版/SXT59.TIF"\*MERGEFORMATINCLUDEPICTURE"../../三年高考两年模拟系列/文含2016高考题最终版/高考文の完成版/SXT59.TIF"\*MERGEFORMATINCLUDEPICTURE"../../新建文件夹/新建文件夹/新建文件夹/第八章/SXT59.TIF"\*MERGEFORMATINCLUDEPICTURE"../../新建文件夹/新建文件夹/新建文件夹/第八章/SXT59.TIF"\*MERGEFORMATINCLUDEPICTURE"E:\\莫成程\\2016\\数学\\文\\SXT211.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT211.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT211.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT211.TIF"\*MERGEFORMATINETINCLUDEPICTURE"E:\\111111111\\模拟题数学文学生\\高考文\\SXT211.TIF"\*MERGEFORMATINETINCLUDEPICTURE"../../三年高考两年模拟系列/文含2016高考题最终版/高考文の...
