3 Txoj Hauv Kev Nrhiav Pom thaj tsam ntawm ib lub xwmfab

Cov txheej txheem:

3 Txoj Hauv Kev Nrhiav Pom thaj tsam ntawm ib lub xwmfab
3 Txoj Hauv Kev Nrhiav Pom thaj tsam ntawm ib lub xwmfab

Video: 3 Txoj Hauv Kev Nrhiav Pom thaj tsam ntawm ib lub xwmfab

Video: 3 Txoj Hauv Kev Nrhiav Pom thaj tsam ntawm ib lub xwmfab
Video: Lub Zog Nruab Nrog (Hmong Dubbed) 2024, Lub peb hlis ntuj
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Nrhiav thaj tsam ntawm ib lub xwmfab yog yooj yim tsuav koj paub qhov ntev ntawm nws sab, puag ncig, lossis kab pheeb ces kaum. Nov yog yuav ua li cas.

Cov kauj ruam

Txoj Kev 1 ntawm 3: Siv Qhov Ntev Ntawm Ib Sab

Nrhiav thaj tsam ntawm Square Square 1
Nrhiav thaj tsam ntawm Square Square 1

Kauj Ruam 1. Sau nws

Cia peb hais tias koj tab tom ua haujlwm nrog lub xwmfab nrog sab ntev ntawm 3 centimeter (1.2 in). Sau nws cia.

Nrhiav thaj tsam ntawm Square Square 2
Nrhiav thaj tsam ntawm Square Square 2

Kauj Ruam 2. Nkag siab cov qauv rau thaj tsam ntawm ib lub xwmfab (Thaj chaw = sab^2)

Txij li txhua lub xwmfab muaj qhov ntev sib npaug, koj tuaj yeem sib npaug qhov deb ntawm nws tus kheej. Yog tias qhov ntev ntawm ib sab yog 3 cm (1.2 in), tom qab ntawd koj tsuas yog yuav tsum tau square 3 centimeter (1.2 in) txhawm rau nrhiav thaj tsam ntawm ib lub xwmfab. 3 cm (1.2 in) x 3 cm (1.2 in) = 9 cm2.

Nrhiav thaj tsam ntawm Square Square 3
Nrhiav thaj tsam ntawm Square Square 3

Kauj Ruam 3. Nco ntsoov qhia koj cov lus teb hauv cov chav nyob

Tom qab ntawd koj ua tiav.

Squaring ib sab ntawm ib lub xwmfab yog tib yam li sib npaug ntawm lub xwmfab qhov siab nws lub hauv paus

Txoj Kev 2 ntawm 3: Siv Kev Paub Diagonal

Nrhiav thaj tsam ntawm Square Square 4
Nrhiav thaj tsam ntawm Square Square 4

Kauj Ruam 1. Siv qhov ntsuas ntawm qhov ntev ntawm kab pheeb ces kaum ntawm lub xwmfab

Nrhiav thaj tsam ntawm Square Square 5
Nrhiav thaj tsam ntawm Square Square 5

Kauj Ruam 2. Nkag siab cov mis rau thaj tsam uas siv kab pheeb ces kaum paub

Luas = (diagonal^2)/2.

Nrhiav thaj tsam ntawm Square Square 6
Nrhiav thaj tsam ntawm Square Square 6

Kauj Ruam 3. Muab qhov ntev ntawm kab pheeb ces kaum qhov ntsuas los ntawm nws tus kheej

Square qhov ntev ntawm kab pheeb ces kaum. Cia peb hais tias koj tab tom ua haujlwm nrog lub xwmfab nrog kab pheeb ces kaum uas yog 5 centimeter (2.0 in) ntev. Tam sim no, ntsuas tus lej no. 5 cm (2.0 in) x 5 centimeter (2.0 in) = 25 cm2.

Nrhiav thaj tsam ntawm Square Square 7
Nrhiav thaj tsam ntawm Square Square 7

Kauj Ruam 4. Muab tus lej tam sim no faib ua 2

Txuas ntxiv kev suav, 25 cm2 tau muab faib ua 2. Qhov no muab 12.5 cm2. Koj ua tiav

Txoj Kev 3 ntawm 3: Siv Kev Paub Ib puag ncig

Nrhiav thaj tsam ntawm Square Tshooj 8
Nrhiav thaj tsam ntawm Square Tshooj 8

Kauj Ruam 1. Muab thaj tsam ib ncig los ntawm 1/4 kom pom qhov ntev ntawm ib sab

Qhov no zoo ib yam li kev faib ib puag ncig los ntawm 4. Txij li thaum muaj plaub sab rau ib lub xwmfab thiab txhua sab yog qhov ntev sib npaug, koj tuaj yeem pom qhov ntev ntawm ib lub xwmfab tsuas yog muab faib ib puag ncig los ntawm 4. Cia peb hais ib puag ncig ntawm lub xwmfab koj tab tom ua haujlwm nrog yog 20 cm (7.9 in). Tsuas yog muab 20 cm (7.9 in) los ntawm 1/4: 20 centimeter (7.9 in) x 1/4 = 5 centimeter (2.0 in). Koj paub tias qhov ntev ntawm ib sab ntawm lub xwmfab yog 5 centimeter (2.0 in).

Nrhiav thaj tsam ntawm Square Ntu 9
Nrhiav thaj tsam ntawm Square Ntu 9

Kauj Ruam 2. Muab qhov ntev ntawm sab los ntawm nws tus kheej

Square qhov ntev ntawm sab. Tam sim no koj paub tias qhov ntev ntawm ib sab yog 5 centimeter (2.0 in), koj tuaj yeem square nws kom tau txais thaj tsam ntawm lub xwmfab. Luas = (5 cm)2 = 25 cm (9.8 nyob rau hauv).2

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