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Koj ua haujlwm li cas perimeter los ntawm cheeb tsam?
Koj ua haujlwm li cas perimeter los ntawm cheeb tsam?

Video: Koj ua haujlwm li cas perimeter los ntawm cheeb tsam?

Video: Koj ua haujlwm li cas perimeter los ntawm cheeb tsam?
Video: Npawg Xeeb thiab Maiv Xis part2 Dab neeg Dab 4/28/2020 2024, Kaum ib hlis
Anonim

Perimeter ntawm Rectangle

  1. Nco ntsoov tus qauv rau ib puag ncig thiab cheeb tsam ntawm cov duab plaub. Cov cheeb tsam ntawm ib daim duab plaub yog a = ntev * dav, thaum lub ib puag ncig yog p = (2 * ntev) + (2 * dav)
  2. Hloov cov txiaj ntsig paub rau hauv cheeb tsam qauv. 36 = 4x w.
  3. Hloov cov nqi rau qhov ntev thiab qhov dav rau hauv ib puag ncig qauv.

Tsis tas li cov lus nug yog, koj yuav nrhiav tau qhov perimeter li cas thaum muab thaj chaw?

Txoj Kev 2 Kev suav cov Perimeter Thaum Thaj Chaw paub

  1. Paub cov qauv rau thaj tsam ntawm ib lub square. Lub cheeb tsam ntawm ib daim duab plaub (nco ntsoov, squares yog cov duab plaub tshwj xeeb) yog txhais asits puag lub sij hawm nws qhov siab.
  2. Nrhiav lub hauv paus square ntawm cheeb tsam.
  3. Muab cov sab ntev los ntawm 4 kom pom qhov perimeter.

koj ua haujlwm li cas hauv cheeb tsam? Qhov yooj yim tshaj plaws (thiab feem ntau siv) cheeb tsam Kev suav yog rau squares thiab rectangles. Rau nrhiav tus cheeb tsam ntawm ib daim duab plaub muab nws qhov siab los ntawm nws qhov dav. Rau asquare koj tsuas xav tau nrhiav qhov ntev ntawm ib sab (raws li txhua sab yog tib qhov ntev) thiab ces muab qhov no los ntawm nws tus kheej nrhiav tus cheeb tsam.

Ntawm no, koj ua li cas xam ib cheeb tsam?

Rau nrhiav tus ib puag ncig ntawm ib daim duab plaub, ntxiv qhov ntev ntawm cov duab plaub plaub sab. Yog tias koj tsuas muaj qhov dav thiab qhov siab, ces koj tuaj yeem yooj yim nrhiav tag nrho plaub sab (ob sab yog sib npaug rau qhov siab thiab ob sab yog sib npaug rau qhov dav). Muab ob qhov siab thiab dav los ntawm ob thiab ntxiv cov txiaj ntsig.

Yuav ua li cas koj ua hauj lwm tawm lub perimeter ntawm ib chav tsev?

Ntsuas qhov ntev thiab qhov dav ntawm ib square orrectangular chav . Siv tus qauv 2(Length + Dav) = Perimeter qauv kom nrhiav tau lub cheeb tsam ntawm ib chav . Siv ib daim kab xev ntsuas, nrhiav qhov ntev thiab dav ntawm lub chav . Ntxiv qhov ntev thiab qhov dav, ces muab cov lus teb los ntawm ob.

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