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7.5外接球(精講)(提升版)思維導(dǎo)圖思維導(dǎo)圖考點(diǎn)呈現(xiàn)考點(diǎn)呈現(xiàn)例題剖析例題剖析考點(diǎn)一漢堡模型【例1】(2022·陜西)已知底面邊長(zhǎng)為1,側(cè)棱長(zhǎng)為SKIPIF1<0則正四棱柱的各頂點(diǎn)均在同一個(gè)球面上,則該球的體積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【一隅三反】1.(2022·全國(guó)·高三專(zhuān)題練習(xí))已知在三棱錐SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0平面SKIPIF1<0,則三棱錐SKIPIF1<0的外接球的表面積是(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022·全國(guó)·高三專(zhuān)題練習(xí))已知在三棱錐SKIPIF1<0中,SKIPIF1<0平面SKIPIF1<0,SKIPIF1<0,則三棱錐SKIPIF1<0外接球的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2023·山西大同·高三階段練習(xí))球內(nèi)接直三棱柱SKIPIF1<0,則球表面積為_(kāi)__________.考點(diǎn)二墻角模型【例2】(2022·全國(guó)·高三專(zhuān)題練習(xí))長(zhǎng)方體的長(zhǎng),寬,高分別為3,SKIPIF1<0,1,其頂點(diǎn)都在球O的球面上,則球O的體積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【一隅三反】1.(2022·全國(guó)·高三專(zhuān)題練習(xí))已知四棱錐P-ABCD中,SKIPIF1<0平面ABCD,底面ABCD是矩形,SKIPIF1<0,若四棱錐P-ABCD外接球的表面積為SKIPIF1<0,則四棱錐P-ABCD的體積為(
)A.3 B.2 C.SKIPIF1<0 D.12.(2022·全國(guó)·高三專(zhuān)題練習(xí))已知三棱錐SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0底面SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則該三棱錐的外接球的體積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2022·海原縣)已知三棱錐SKIPIF1<0的所有頂點(diǎn)都在球SKIPIF1<0的球面上,且SKIPIF1<0平面SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則球SKIPIF1<0的表面積為_(kāi)__________.考點(diǎn)三斗笠模型【例3】(2023·全國(guó)·高三專(zhuān)題練習(xí))已知三棱錐SKIPIF1<0的四個(gè)頂點(diǎn)都在球SKIPIF1<0的球面上SKIPIF1<0是邊長(zhǎng)為SKIPIF1<0的正三角形,則球SKIPIF1<0的表面積等于(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【一隅三反】1(2022·全國(guó)·高三專(zhuān)題練習(xí))已知圓臺(tái)的母線長(zhǎng)為2,母線與軸的夾角為60°,且上、下底面的面積之比為1:4,則該圓臺(tái)外接球的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022·湖北武漢·高三開(kāi)學(xué)考試)已知正三棱錐的各頂點(diǎn)都在同一球面上,若該球的表面積為SKIPIF1<0,則該正三棱錐體積的最大值為_(kāi)__________.3.(2022·江西)正三棱錐P-ABC底面邊長(zhǎng)為2,M為AB的中點(diǎn),且PM⊥PC,則三棱錐P-ABC外接球的體積為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0考點(diǎn)四麻花模型【例4】(2022·全國(guó)·高三專(zhuān)題練習(xí))如圖,在三棱錐SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則三棱錐SKIPIF1<0外接球的體積為(
)
A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【一隅三反】1.(2022·全國(guó)·高三專(zhuān)題練習(xí))在三棱錐SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則三棱錐SKIPIF1<0的外接球的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022·全國(guó)·高三專(zhuān)題練習(xí))在三棱錐A-BCD中,SKIPIF1<0,SKIPIF1<0,二面角A-BD-C是鈍角.若三棱錐A-BCD的體積為2,則A-BCD的外接球的表面積是(
)A.12π B.13π C.SKIPIF1<0 D.SKIPIF1<0考點(diǎn)五L模型【例5】(2022·全國(guó)·高三專(zhuān)題練習(xí))在三棱錐SKIPIF1<0中,平面SKIPIF1<0平面SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則該三棱錐外接球的表面積是(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【一隅三反】1(2022·江西高三)在三棱錐SKIPIF1<0中,SKIPIF1<0是等邊三角形,平面SKIPIF1<0平面SKIPIF1<0,SKIPIF1<0,則三棱錐SKIPIF1<0的外接球體積為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022·四川雅安市)在四面體ABCD中,已知平面SKIPIF1<0平面SKIPIF1<0,且SKIPIF1<0,其外接球表面積為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2023·重慶九龍坡區(qū))在三棱錐SKIPIF1<0中,平面SKIPIF1<0平面SKIPIF1<0,SKIPIF1<0,則三棱錐SKIPIF1<0的外接球的表面積為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0考點(diǎn)六懷表模型【例6】(2022·全國(guó)·高三專(zhuān)題練習(xí))在邊長(zhǎng)為6的菱形ABCD中,SKIPIF1<0,現(xiàn)將SKIPIF1<0沿BD折起到SKIPIF1<0的位置,當(dāng)三棱錐SKIPIF1<0的體積最大時(shí),三棱錐SKIPIF1<0的外接球的表面積為(
)A.60π B.45π C.30π D.20π【一隅三反】1.(2022·全國(guó)·高三專(zhuān)題練習(xí))在三棱錐SKIPIF1<0中,SKIPIF1<0是邊長(zhǎng)為SKIPIF1<0的等邊三角形,SKIPIF1<0,二面角SKIPIF1<0是150°,則三棱錐SKIPIF1<0外接球的表面積是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.(2022·全國(guó)·高三專(zhuān)題練習(xí))在三棱錐SKIPIF1<0中,SKIPIF1<0為等腰直角三角形,SKIPIF1<0,SKIPIF1<0為正三角形,且二面角SKIPIF1<0的平面角為SKIPIF1<0,則三棱錐SKIPIF1<0的外接球表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0考點(diǎn)七矩形模型【例7】(2022·湖北襄陽(yáng)市)若矩形ABCD的面積是4,沿對(duì)角線AC將矩形ABCD折成一個(gè)大小是60°的二面角B-AC-D,則四面體ABCD的外接球的體積最小值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【一隅三反】1.(2022.江西)在矩形SKIPIF1<0中SKIPIF1<0,SKIPIF1<0,沿對(duì)角線SKIPIF1<0進(jìn)行翻折,則三棱錐SKIPIF1<0外接球的表面積為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022·天津河)將長(zhǎng)、寬分別為SKIPIF1<0和SKIPIF1<0的長(zhǎng)方形SKIPIF1<0沿對(duì)角線SKIPIF1<0折成直二面角,得到四面體SKIPIF1<0,則四面體SKIPIF1<0的外接球的表面積為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2022·四川)中國(guó)古代數(shù)學(xué)家劉徽所注釋的《九章算術(shù)》中,稱(chēng)四個(gè)面均為直角三角形的四面體為“鱉臑”.如圖所示的鱉臑SKIPIF1<0中,SKIPIF1<0面SKIPIF1<0,SKIPIF1<0,若SKIPIF1<0,SKIPIF1<0,且頂點(diǎn)SKIPIF1<0均在球SKIPIF1<0上,則球SKIPIF1<0的表面積為_(kāi)_____.考點(diǎn)八內(nèi)切球【例8】(2022·全國(guó)·高三專(zhuān)題練習(xí))如圖,在三棱錐SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,若三棱錐SKIPIF1<0的內(nèi)切球SKIPIF1<0的表面積為SKIPIF1<0,則此三棱錐的體積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【一隅三反】1.(2022·江西·高三階段練習(xí)(理))在正三棱錐SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0分別是SKIPIF1<0,SKIPIF1<0的中點(diǎn),且SKIPIF1<0,SKIPIF1<0,則正三棱錐SKIPIF1<0的內(nèi)切球的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.(2022·全國(guó)·高三專(zhuān)題練習(xí))在三棱錐SKIPIF1<0中,SKIPIF1<0平面SKIPIF1<0,且SKIPIF1<0,若球SKIPIF1<0在三棱錐SKIPIF1<0的內(nèi)部且與四個(gè)面都相切(稱(chēng)球SKIPIF1<0為三棱錐SKIPIF1<0的內(nèi)切球),則球SKIPIF1<0的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2022黑龍江)如圖,在四棱錐SKIPIF1<0中,SKIPIF1<0是正方形SKIPIF1<0的中心,SKIPIF1<0底面SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則四棱錐SKIPIF1<0內(nèi)切球的體積為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<07.5外接球(精練)(提升版)題組一題組一漢堡模型1.(2022·全國(guó)·高三專(zhuān)題練習(xí))在四棱錐SKIPIF1<0中,已知底面ABCD為矩形,SKIPIF1<0底面ABCD,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則四棱錐SKIPIF1<0的外接球O的表面積是(
)A.80π B.160π C.60π D.40π2.(2022·全國(guó)·高三專(zhuān)題練習(xí))在直三棱柱SKIPIF1<0中,若SKIPIF1<0,則該直三棱柱外接球的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2022·全國(guó)·高三專(zhuān)題練習(xí))已知正三棱柱SKIPIF1<0所有棱長(zhǎng)都為6,則此三棱柱外接球的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.(2022·全國(guó)·高三專(zhuān)題練習(xí))據(jù)《九章算術(shù)》記載,“鱉臑”為四個(gè)面都是直角三角形的三棱錐.如圖所示,現(xiàn)有一個(gè)“鱉臑”,SKIPIF1<0底面SKIPIF1<0,SKIPIF1<0,且SKIPIF1<0,三棱錐外接球表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<05.(2022·全國(guó)·高三專(zhuān)題練習(xí))已知三棱錐SKIPIF1<0中,底面BCD是邊長(zhǎng)為SKIPIF1<0的正三角形,SKIPIF1<0底面BCD,且SKIPIF1<0,則該幾何體的外接球的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06.(2023·全國(guó)·高三專(zhuān)題練習(xí))已知S,A,B,C是球O表面上的點(diǎn),SKIPIF1<0平面ABC,AB⊥BC,SKIPIF1<0,SKIPIF1<0,則球O的表面積等于(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<07.(2022·河北衡水·高三階段練習(xí))在三棱錐SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則三棱錐SKIPIF1<0外接球的體積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0題組二題組二墻角模型1.(2022·廣西·貴港市高級(jí)中學(xué)三模(理))《九章算術(shù)》中將底面是直角三角形的直三棱柱稱(chēng)之為“塹堵”,將底面為矩形,一條側(cè)棱垂直于底面的四棱錐稱(chēng)之為“陽(yáng)馬”,在如圖所示的塹堵SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則在塹堵SKIPIF1<0中截掉陽(yáng)馬SKIPIF1<0后的幾何體的外接球的體積與陽(yáng)馬SKIPIF1<0的體積比為(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.(2023·全國(guó)·高三專(zhuān)題練習(xí))如圖,在四棱錐SKIPIF1<0中,SKIPIF1<0底面SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0為棱SKIPIF1<0的中點(diǎn).若四棱錐SKIPIF1<0的體積為SKIPIF1<0,則三棱錐SKIPIF1<0外接球的表面積為_(kāi)_____.3(2022·四川雅安·三模(文))在三棱錐SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,則三棱錐SKIPIF1<0外接球的表面積是___________.4.(2022·河北保定·二模)在《九章算術(shù)》中,將四個(gè)面都是直角三角形的三棱錐稱(chēng)為鱉臑.已知在鱉臑P-ABC中,AB⊥BC,PA⊥平面ABC,且SKIPIF1<0,則鱉臑P-ABC外接球的體積是___________.題組三題組三斗笠模型1.(2022·黑龍江)某圓錐的側(cè)面展開(kāi)后,是一個(gè)圓心角為SKIPIF1<0的扇形,則該圓錐的體積與它的外接球的體積之比為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022廣西)已知圓錐的頂點(diǎn)和底面圓周都在球O的球面上,圓錐的母線長(zhǎng)為3,側(cè)面展開(kāi)圖的面積為SKIPIF1<0,則球O的表面積等于()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2022·寧夏銀川市)已知一個(gè)圓錐的底面圓面積為SKIPIF1<0,側(cè)面展開(kāi)圖是半圓,則其外接球的表面積等于()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.(2022·河南)一圓臺(tái)的兩底面半徑分別為SKIPIF1<0,高為SKIPIF1<0,則該圓臺(tái)外接球的表面積為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<05.(2022·浙江)已知圓錐的頂點(diǎn)和底面圓周都在球SKIPIF1<0面上,圓錐的側(cè)面展開(kāi)圖的圓心角為SKIPIF1<0,面積為SKIPIF1<0,則球SKIPIF1<0的表面積等于()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06.(2022·天津南開(kāi)區(qū))已知一個(gè)圓錐的底面半徑為SKIPIF1<0,高為SKIPIF1<0,其體積大小等于某球的表面積大小,則此球的體積是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0題組四題組四L模型1.(2022·安徽·巢湖市第一中學(xué))已知三棱錐SKIPIF1<0中,平面SKIPIF1<0平面SKIPIF1<0,且SKIPIF1<0,SKIPIF1<0,若SKIPIF1<0,則三棱錐SKIPIF1<0外接球的表面積為(
)A.64π B.128π C.40π D.80π2.(2022·吉林·洮南市第一中學(xué)高三階段練習(xí)(理))已知三棱錐SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,平面SKIPIF1<0平面ABC,則三棱錐的外接球的表面積為_(kāi)_____.3.(2023·全國(guó)·高三專(zhuān)題練習(xí))在三棱錐SKIPIF1<0中,平面SKIPIF1<0平面SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則該三棱錐外接球的表面積是___________.4.(2022·新疆烏魯木齊·模擬預(yù)測(cè)(文))在三棱錐SKIPIF1<0中,SKIPIF1<0,平面SKIPIF1<0平面SKIPIF1<0,則三棱錐SKIPIF1<0外接球的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<05.(2022·重慶八中高三階段練習(xí))在三棱錐SKIPIF1<0中、平面SKIPIF1<0平面SKIPIF1<0,SKIPIF1<0,且SKIPIF1<0,則三棱維SKIPIF1<0的外接球表面積是(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06.(2022·內(nèi)蒙古·滿洲里市教研培訓(xùn)中心模擬預(yù)測(cè)(理))已知四棱錐SKIPIF1<0中,平面SKIPIF1<0平面ABCD,其中SKIPIF1<0為正方形,SKIPIF1<0是邊長(zhǎng)為2的等邊三角形,則四棱錐SKIPIF1<0外接球的表面積為(
)A.4SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0題組五題組五懷表模型1.(2022·全國(guó)·高三專(zhuān)題練習(xí))四邊形ABDC是菱形,SKIPIF1<0,SKIPIF1<0,沿對(duì)角線BC翻折后,二面角A-BD-C的余弦值為SKIPIF1<0,則三棱錐D-ABC的外接球的體積為_(kāi)____.2.(2022·全國(guó)·高三專(zhuān)題練習(xí))如圖,在三棱錐SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,二面角SKIPIF1<0的大小為SKIPIF1<0,則三棱錐SKIPIF1<0的外接球的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2023·全國(guó)·高三專(zhuān)題練習(xí))兩個(gè)邊長(zhǎng)為2的正三角形SKIPIF1<0與SKIPIF1<0,沿公共邊SKIPIF1<0折疊成SKIPIF1<0的二面角,若點(diǎn)SKIPIF1<0在同一球SKIPIF1<0的球面上,則球SKIPIF1<0的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.(2022·全國(guó)·模擬預(yù)測(cè))已知四邊形SKIPIF1<0為菱形,且SKIPIF1<0,現(xiàn)將SKIPIF1<0沿SKIPIF1<0折起至SKIPIF1<0,并使得SKIPIF1<0與平面SKIPIF1<0所成角的余弦值為SKIPIF1<0,此時(shí)三棱錐SKIPIF1<0外接球的體積為SKIPIF1<0,則該三棱錐的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<05.(2022·全國(guó)·高三專(zhuān)題練習(xí))已知菱形SKIPIF1<0中,SKIPIF1<0,將其沿對(duì)角線SKIPIF1<0折成四面體SKIPIF1<0,使得二面角SKIPIF1<0的大小為SKIPIF1<0,若該四面體的所有頂點(diǎn)在同一個(gè)球面上,則該球的表面積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06(2021·安徽高三月考(文))已知三棱錐SKIPIF1<0的每個(gè)頂點(diǎn)都在球SKIPIF1<0的球面上,平面SKIPIF1<0平面SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則三棱錐SKIPIF1<0外接球的表面積為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0題組六矩形模型題組六矩形模型1.(2022·安徽合肥市)在三棱錐SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0.若三棱錐SKIPIF1<0的體積為1,則該三棱錐外接球的表面積為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022·甘肅酒泉市)已知三棱錐
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