Yuav ua li cas mus nrhiav tau lub ntim ntawm ib lub voos xwmfab nyob rau hauv ntau txoj kev

Yog hais tias peb xav txog tej yam li ib txwm cov me nyuam blocks, nws yog ib qho yooj yim to taub yuav ua li cas nrhiav tau lub ntim ntawm ib lub voos xwmfab. Los ntawm adopting qhov ntim ntawm ib lub voos xwmfab ntawm ib tug nyhav ntim ntsuas, piv txwv li, ib nyhav decimeter, peb pib tsim ib tug loj lub voos xwmfab. Folding cov thawj square "pem teb", xws li 4x4, koj yuav tsum muab tso rau 4 "pem teb" rau tag nrho cov npoo ntawm peb lub voos xwmfab yog muaj sib npaug. Koob pheej ntawm lawv ntawm tag nrho cov sab ntawm cov thawv muaj rau sab - yog qhov tseem ceeb txoj cai, uas proves tias nyob rau hauv pem hauv ntej ntawm peb yog ib lub voos xwmfab.

Nrhiav qhov luaj li cas ntawm ib tug square lub ntsej muag tau yooj yim, peb yuav tsum tsuas muab lub dav thiab ntev ntawm lub hauv paus, uas yog, los tsim kom tau ib tug ntug nyob rau hauv lub square. Txij li thaum peb tau txais ib tug ob peb kab - "plag tsev", los yog es, lawv lem nyob rau hauv ib tug kab vaj huam sib luag npaum li cas rau ntawm ntug ntawm lub thawv muaj rau sab, lub resulting square dua khoo los ntawm lub qhov siab ntawm lub thawv muaj rau sab, uas yog, nyob rau hauv nws ntug. Nws hloov tawm, yog li ntawd, hais tias peb tsim kom muaj cov tav nyob rau hauv lub thib peb degree, nyob rau hauv lwm yam lus - nyob rau hauv ib lub voos xwmfab. Cia li zoo li hais tias, nws zoo nkaus li, nrhiav qhov ntim ntawm ib lub voos xwmfab!

Nws yog los ntawm no thiab yuav siv sij hawm nws lub npe los ntawm kev tsim kho ntawm peb hwj chim - "nyob rau hauv ib lub voos xwmfab." Hais tias yog, "lub thawv muaj rau sab" yuav siv sij hawm peb lub sij hawm mus muab lub xov tooj ntawm nws tus kheej - qhov qhia nws tus kheej twb muaj nws cov hauv paus nyob rau hauv kev nrhiav cov tshuaj rau qhov teeb meem ntawm lub nyhav ntim.

Tab sis yog hais tias tus luaj li cas ntawm cov thawv muaj rau sab npoo, uas yog, ib sab ntawm lub thawv muaj rau sab, yog tsis paub, tab sis qhov luaj li cas ntawm ib qho ntawm nws ib sab yog yuav ua li cas nrhiav tau lub ntim ntawm ib lub voos xwmfab? Tau nws yuav ua li cas? Nws hloov tawm hais tias nws yog heev computable.

Kab pheeb ces kaum sab yuav tsum xam cov kev taw qhia ntawm cov tib lub ntsej muag tus nqi thiab muab tso rau hauv ib lub voos xwmfab, uas yog nyob rau hauv lub thib peb degree. Kom nws dlaim phaj, peb kos ib tug ntawm cov nyhav ib sab - nws yuav tsum yog ib tug square, piv txwv li, PMNK, qhov twg MN - kab pheeb ces kaum, uas yog lub npe hu rau peb. Siv cov Pythagorean theorem, vozvedom paub tus nqi diagonally nyob rau hauv ib tug square los yog nyob rau hauv lub thib ob degree. Nyob rau hauv ib txoj cai daim duab peb sab PMN MN sab yog cov hypotenuse, thiab nws cov square yog sib npaug zos rau qhov tawm ntawm cov qhov lwm ob sab, tsa nyob rau hauv lub square.

Tiam sis peb paub hais tias tus ob txhais ceg - ib tug sab ntawm lub square lub ntsej muag ntawm lub thawv muaj rau sab. Yog li ntawd, tshwm sim yuav tsum tau muab faib ua ob tug, thiab nrhiav tau cov square hauv paus. Qhov no tshwm sim yuav tsum tau sib npaug zos rau cov sab - npoo ntawm lub thawv muaj rau sab. Tam sim no rau lo lus nug yog ua li cas los xam qhov ntim ntawm ib lub voos xwmfab solved nyob rau hauv qhov nyuaj tshaj. Cia li ib yam dab tsi tsuas yog txhim tsa sab ntawm lub thawv muaj rau sab nyob rau hauv lub thib peb degree - thiab cov kev tshwm sim yog cuab kev.

Nws feem ntau tshwm sim hais tias nyob rau hauv qhov teeb meem yog ib tug nqi, raws li cov cheeb tsam ntawm ib qho ntawm lub ntsej muag ntawm lub thawv muaj rau sab. Nyob rau hauv cov ntaub ntawv no, ua ntej koj yuav tau mus nrhiav rau sab ntawm lub square - lub ntsej muag ntawm lub thawv muaj rau sab. Nws yog txaus mus nrhiav tus square hauv paus ntawm ib tug muab cheeb tsam. Tom qab ntawd, xam tus nqi yog multiplied los ntawm tus paub verge cheeb tsam.

Tej zaum koj cia li yuav tsum tau paub yuav ua li cas nrhiav tau lub ntim ntawm ib lub voos xwmfab, tab sis yog tsis muaj me me, tsis muaj tav, tsis muaj cheeb tsam lub voos xwmfab txhais tes. Txawm li cas los, Yog hais tias qhov no ua hauj lwm tau muab cov ntaub ntawv xws li ceev thiab hnyav, daim ntawv qhia yuav xam los ntawm txawj cov ntaub ntawv nqi: ceev thiab loj. Nrhiav volume yuav tau ua nyob rau hauv cov khoom.

Thiab yog hais tias ib tug neeg tsis muaj ib yam kev ntsuas ntawm yuav ua li cas mus nyob rau hauv cov ntaub ntawv no? Nyob rau hauv kev xyaum, feem ntau siv xws li tej yam yooj yim txais tos, raws li cov immersion ntawm lub cev nyob rau hauv ib cov kua. Yog li ntawd yuav ua li cas nrhiav tau lub ntim ntawm ib lub voos xwmfab nrog tsis muaj daim kab xev ntsuas thiab rulers?

Koj yuav tsum ntsuas tawm ib qhov nqi ntawm cov kua nyob rau hauv lub tank, piv txwv li, nyob rau hauv lub lauj kaub, sau mus rau lub brim. Ces los txog rau lub peev xwm los muab tso rau hauv lwm lub tais. Immersing lub thawv muaj rau sab mus rau hauv ib lub kua, nws yog tsim nyog los sim mus sau tag nrho cov kua slopping tshaj. Ces, xab beaker los yog nws lub tsev txhab nyiaj (nyob ntawm seb qhov ntim ntawm lub thawv muaj rau sab qhov tseem ceeb), koj yuav ua tau ib tug xaus txog qhov ntim ntawm ib lub voos xwmfab - nws yuav ua ncaj rau tus nqi ntawm cov dej hais tias cov thawv muaj rau sab tau hloov nws dhia dej.

Tu siab, nws yog ib qhov nyuaj los yog txawm tsis yooj yim sua los ntsuas nyob rau hauv no txoj kev lub ntim loj ntsuas. Tab sis txij thaum koj muaj peev xwm kawm tsis tau tsuas yog qhov ntim ntawm lub thawv muaj rau sab, tab sis cov khoom ntawm yam zoo.

Nws muaj lwm yam possibilities uas nrhiav tau lub ntim ntawm ntsuas. Piv txwv li, ib tug paub ntev ntawm lub kab pheeb ces kaum ntawm ib lub voos xwmfab (tsis yog tus ntug!). Nws yog lub npe hu hais tias cov mis ntawm lub thawv muaj rau sab kab pheeb ces kaum qhia cov khoom ntawm cov npoo ntawm cov square hauv paus ntawm 3. Yog li ntawd, cov kab pheeb ces kaum sib faib los ntawm lub square hauv paus ntawm 3 thiab muab tau cov ntug ntev. Tom qab hais tias, txhua yam yog yooj yim heev: txhim tsa tshwm sim nyob rau hauv ib lub voos xwmfab thiab tau txais cov kev kawm cov lus teb.