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.document-html-preview--word div.Section0{page:Section0;}</style><div class="document-html-preview__page document-html-preview__page--word" data-page="1">B&#192;I TO&#193;N TH&#7920;C T&#7870; <span style="mso-spacerun:'yes';font-family:'Times New Roman';mso-fareast-font-family:Calibri;
color:rgb(255,0,0);font-weight:bold;font-size:12.0000pt;
background:rgb(255,255,0);mso-highlight:rgb(255,255,0)" >PH&#431;&#416;NG TR&#204;NH M&#7862;T C&#7846;U<o:p></o:p>C&#226;u 1. Khi g&#7855;n h&#7879; to&#7841; &#273;&#7897; <img width="37" height="22" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/72fd022b8404dd7ac273.png" >&nbsp;(&#273;&#417;n v&#7883; tr&#234;n m&#7895;i tr&#7909;c t&#237;nh theo kil&#244;m&#233;t) v&#224;o kh&#244;ng gian, ng&#432;&#7901;i ta th&#7845;y r&#7857;ng m&#7897;t kh&#244;ng gian ph&#7911; s&#243;ng &#273;i&#7879;n tho&#7841;i c&#243; d&#7841;ng m&#7897;t h&#236;nh c&#7847;u <img width="25" height="27" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/9f71ca29ad2cc8536e6a.png" >&nbsp;(t&#7853;p h&#7907;p nh&#7919;ng &#273;i&#7875;m n&#7857;m tr&#234;n v&#224; n&#7857;m trong m&#7863;t c&#7847;u t&#432;&#417;ng &#7913;ng). Bi&#7871;t m&#7863;t c&#7847;u c&#243; ph&#432;&#417;ng tr&#236;nh <img width="232" height="25" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/1b1b18e2ad886a1a1859.png" >. Kho&#7843;ng c&#225;ch xa nh&#7845;t gi&#7919;a hai &#273;i&#7875;m thu&#7897;c v&#249;ng ph&#7911; s&#243;ng l&#224; bao nhi&#234;u kil&#244;m&#233;t?<o:p></o:p>C&#226;u 2. Trong kh&#244;ng gian v&#7899;i h&#7879; tr&#7909;c Oxyz, gi&#7843; s&#7917; m&#7863;t &#273;&#7845;t tr&#249;ng v&#7899;i m&#7863;t ph&#7859;ng <img width="44" height="27" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/875ae208b2a9746c2ba4.png" >. M&#7897;t b&#243;ng &#273;&#232;n trang tr&#237; d&#7841;ng kh&#7889;i c&#7847;u c&#243; t&#226;m <img width="70" height="27" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/0f6046b33a3dfc86505b.png" >&nbsp;v&#224; b&#225;n k&#237;nh <img width="15" height="19" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/06c8569f2d6d46e3f6e9.png" >&nbsp;&#273;&#432;&#7907;c treo c&#7889; &#273;&#7883;nh l&#234;n tr&#7847;n nh&#224; (&#273;&#417;n v&#7883; tr&#234;n m&#7895;i tr&#7909;c t&#7885;a &#273;&#7897; l&#224; <img width="17" height="15" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/546f057920794c40f773.png" >). M&#7897;t con ki&#7871;n b&#242; t&#249;y &#253; tr&#234;n b&#243;ng &#273;&#232;n v&#224; m&#7897;t con ki&#7871;n kh&#225;c b&#242; t&#249;y &#253; tr&#234;n m&#7863;t &#273;&#7845;t, gi&#7843; s&#7917; vect&#417; t&#7841;o b&#7903;i t&#7885;a &#273;&#7897; v&#7883; tr&#237; c&#7911;a 2 con ki&#7871;n lu&#244;n c&#249;ng ph&#432;&#417;ng v&#7899;i &#273;&#432;&#7901;ng th&#7859;ng <img width="130" height="44" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/9059e834db2a311addf1.png" >(coi m&#7895;i con ki&#7871;n l&#224; m&#7897;t &#273;i&#7875;m). Bi&#7871;t l&#250;c 2 con ki&#7871;n g&#7847;n nhau nh&#7845;t c&#243; kho&#7843;ng c&#225;ch b&#7857;ng <img width="50" height="44" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/8b14d26ce05ae54fed6f.png" >. B&#225;n kh&#7889;i c&#7847;u c&#243; &#273;&#7897; d&#224;i bao nhi&#234;u <img width="25" height="15" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/d22860578a13c1063db0.png" >.<o:p></o:p><p class=MsoNormal align=justify style="margin-left:49.6000pt;tab-stops:left blank 49.6000pt left blank 170.1000pt left blank 283.4500pt left blank 396.8500pt ;text-align:justify;
text-justify:inter-ideograph;line-height:114%" ><img width="237" height="253" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/e8d8b203cdb7f03edca7.png" ><o:p>&nbsp;</o:p>C&#226;u 3. M&#7897;t c&#417; s&#7903; s&#7843;n xu&#7845;t Kem l&#224;m m&#7897;t m&#244; h&#236;nh Kem &#7889;c qu&#7871; l&#7899;n g&#7891;m 2 ph&#7847;n: Ph&#7847;n Kem c&#243; d&#7841;ng h&#236;nh c&#7847;u, ph&#7847;n &#7889;c qu&#7871; c&#243; d&#7841;ng h&#236;nh n&#243;n (nh&#432; h&#236;nh v&#7869; b&#234;n). Ch&#7911; c&#417; s&#7903; s&#7843;n xu&#7845;t mu&#7889;n g&#7855;n m&#7897;t chi&#7871;c &#273;&#232;n Led l&#7899;n chi&#7871;u th&#7859;ng c&#226;y kem v&#224;o bu&#7893;i t&#7889;i, bi&#7871;t r&#7857;ng chi&#7871;c &#273;&#232;n n&#7857;m tr&#234;n m&#7863;t ph&#7859;ng ch&#7913;a &#273;&#432;&#7901;ng tr&#242;n<img width="27" height="22" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/3879f0d429dfd01cb977.png" >&nbsp;l&#224; ph&#7847;n ti&#7871;p x&#250;c gi&#7919;a ph&#7847;n Kem v&#224; ph&#7847;n &#7889;c qu&#7871;. Ch&#7885;n h&#7879; tr&#7909;c t&#7885;a &#273;&#7897; <img width="37" height="22" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/72fd022b8404dd7ac273.png" >&nbsp;trong kh&#244;ng gian th&#7887;a m&#227;n<o:p></o:p><p class=MsoNormal align=justify style="margin-left:49.6000pt;tab-stops:left blank 49.6000pt left blank 170.1000pt left blank 283.4500pt left blank 396.8500pt ;text-align:justify;
text-justify:inter-ideograph" ><img width="125" height="187" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/084bb95ecda30cc7b6a5.png" ><img width="123" height="189" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/66b9e8f4399a59017f94.png" ><o:p>&nbsp;</o:p><p class=MsoNormal align=justify style="margin-left:49.6000pt;tab-stops:left blank 49.6000pt left blank 170.1000pt left blank 283.4500pt left blank 396.8500pt ;text-align:justify;
text-justify:inter-ideograph" >ph&#7847;n Kem h&#236;nh c&#7847;u c&#243; t&#226;m<img width="57" height="22" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/4e54fd7c0777e9c8445c.png" >, b&#225;n k&#237;nh<img width="44" height="24" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/5bff903cb8157764af5b.png" >&nbsp;v&#224; ph&#7847;n &#273;&#7881;nh c&#7911;a h&#236;nh n&#243;n l&#224; &#273;i&#7875;m<img width="73" height="22" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/03924c1bc8bc61b75a2f.png" >&nbsp;&#273;&#225;y l&#224; &#273;&#432;&#7901;ng tr&#242;n c&#243; b&#225;n k&#237;nh<img width="62" height="27" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/d5ca17f3b0bf687e871d.png" >. &#272;&#7875; t&#7889;i &#432;u h&#243;a l&#432;&#7907;ng &#225;nh s&#225;ng chi&#7871;c &#273;&#232;n c&#243; th&#7875; chi&#7871;u v&#224;o c&#226;y kem ng&#432;&#7901;i ta t&#237;nh to&#225;n r&#7857;ng chi&#7871;c &#273;&#232;n Led s&#7869; ph&#7843;i &#7903; v&#7883; tr&#237;<img width="110" height="22" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/de5c1df657ddb778ab1f.png" >&nbsp;v&#224; t&#7915; &#273;i&#7875;m<img width="22" height="17" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/1db70898bb1470f1b384.png" >&nbsp;k&#7867; &#273;&#432;&#7907;c 2 ti&#7871;p tuy&#7871;n v&#7899;i &#273;&#432;&#7901;ng tr&#242;n<img width="27" height="22" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/3879f0d429dfd01cb977.png" >&nbsp;sao cho g&#243;c gi&#7919;a 2 ti&#7871;p tuy&#7871;n &#273;&#243; kh&#244;ng b&#233; h&#417;n<img width="24" height="22" src="https://daythem.com/public/s3/user.document/user-system-generate/toan/lop-12/b0447830103a86/html-preview-assets/2acf043959754416cd25.png" >. C&#243; bao nhi&#234;u v&#7883; tr&#237; &#273;&#7863;t chi&#7871;c &#273;&#232;n Led th&#7887;a m&#227;n y&#234;u c&#7847;u c&#7911;a ch&#7911; c&#417; s&#7903;.<o:p></o:p></div></section>

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25 Bài Toán Thực Tế Bài Phương Trình Mặt Cầu Lớp 12

DẠY 2 BÉ LỚP 10 VÀ LỚP 12 MÔN TOÁN

25 Bài Toán Thực Tế Bài Phương Trình Mặt Cầu Lớp 12

3 giây trước

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