A、<img width="28" height="21" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-09-01/29479955-4111-44df-98a2-ef8fecde39ef.png">
B、<img width="36" height="21" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-09-01/1d05e47c-f985-417c-8707-f8f82144d0b7.png">
C、<img width="36" height="21" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-09-01/d73a1439-c3c1-4de6-a24b-22e3f0931bdb.png">
D、<img width="43" height="21" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-09-01/1596abfb-4bbe-4b3d-9803-53c4c3502616.png">
A、<img width="28" height="21" id="图片 204" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-09-01/ea1ce81a-a717-450a-9348-c228de670e19.png" alt="说明:wps_clip_image-31974">
B、<img width="36" height="21" id="图片 203" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-09-01/92d90095-2766-4eb1-9c87-1e50f448e77d.png" alt="说明:wps_clip_image-2847">
C、<img width="36" height="21" id="图片 202" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-09-01/71eff6c3-ac59-4b49-bc2f-72fb9112baac.png" alt="说明:wps_clip_image-15641">
D、<img width="43" height="21" id="图片 201" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-09-01/997f8dbf-5e26-49ef-823d-01301e26a509.png" alt="说明:wps_clip_image-26601">
A、<img width="28" height="21" id="图片 204" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-08-09/9e13c2b4-c769-4731-b66a-de10aa350da4.png" alt="说明:wps_clip_image-31974">
B、<img width="36" height="21" id="图片 203" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-08-09/90c85fba-bc13-401f-b173-307f0249ceb7.png" alt="说明:wps_clip_image-2847">
C、<img width="36" height="21" id="图片 202" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-08-09/1490dc45-d5b9-4dd8-9948-1b8310d82299.png" alt="说明:wps_clip_image-15641">
D、<img width="43" height="21" id="图片 201" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-08-09/8797c345-3fef-4cdc-8edf-44660941170b.png" alt="说明:wps_clip_image-26601">
A、<img width="28" height="21" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-08-09/27531274-eb66-456c-8909-9128bea6cd90.png">
B、<img width="36" height="21" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-08-09/3ce97791-79c6-4fad-856f-8d93a01a1721.png">
C、<img width="36" height="21" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-08-09/56f236c5-f6c2-41e5-8841-9f6431711d70.png">
D、<img width="43" height="21" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2016-08-09/e9f76189-2c5a-42a3-9cef-b5ca4269baf5.png">
A、<img width="28" height="21" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/9d4a3b60-3036-429c-aef5-3eb7dd646920.png">
B、<img width="36" height="21" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/242896f9-0478-460f-b46e-6594385e1698.png">
C、<img width="36" height="21" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/fd164695-7724-4537-8819-e02c4e0ed856.png">
D、<img width="43" height="21" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/5a6e914a-ac69-418b-a9d5-c00df505e633.png">
A、<img width="28" height="21" id="图片 866" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/5c21b986-67ba-495d-accb-8470bf2cb623.png" alt="说明:wps_clip_image-31974">
B、<img width="36" height="21" id="图片 865" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/1e8d2c3c-d1dd-42dd-a7b4-ed8fbd4c8d14.png" alt="说明:wps_clip_image-2847">
C、<img width="36" height="21" id="图片 864" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/2fd4310b-5f08-49e4-b7de-5b6b87b1d5dd.png" alt="说明:wps_clip_image-15641">
D、<img width="43" height="21" id="图片 863" src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/7a44e9a0-00e6-45e5-81f3-58d9e3ad92e5.png" alt="说明:wps_clip_image-26601">
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试题解析
若正方体的棱长为a,则其外接球的直径为正方体对角线的长,即为
,所以外接球的半径r为
,外接球的表面积为
=
.