Qhov luaj li cas ntawm chav tsev ua lub luag haujlwm tseem ceeb thaum tsim cov tsev lossis kho chav. Thaum tsim ib qhov project tsim, raws li cov qauv, qhov loj ntawm lub qhov rais yog txiav txim siab los ntawm cov duab ntawm cov chav. Thiab thaum lub sij hawm kho, kev xam kom raug ntawm thaj tsam ntawm uXNUMXbuXNUMXbthe chav yuav tso cai rau koj mus yuav cov khoom tsim nyog. Lub laij lej ntawm square metres yuav pab koj ua qhov tsim nyog suav.
Cov chav feem ntau yog cov duab plaub lossis cov squares - koj tuaj yeem pom lawv thaj chaw xws li cov duab plaub. Kev suav siv qhov ntev thiab qhov dav ntawm chav tsev.
Nov yog cov qauv los nrhiav thaj tsam ntawm ib chav tsev:
S = a * ib
Qhov twg:
- S - square;
- a - chav ntev
- b - qhov dav ntawm chav.
Ntsuas phab ntsa-rau-phab ntsa nrog ib daim kab xev ntsuas thiab nkag mus rau qhov tseem ceeb hauv meters rau hauv lub tshuab xam zauv teb. Cov txiaj ntsig tau tshwm sim hauv square metres - m2 raug rau ob feem kaum.
daim duab peb sab
Yog hais tias chav tsev nyob rau hauv cov duab ntawm ib daim duab peb sab, ces siv cov duab hauv qab no.
Lub tshuab xam zauv quadrature no siv cov qauv los xam cov cheeb tsam ntawm daim duab peb sab:
S = (a × b) /2
Nyob rau hauv ib chav tsis zoo li qub, qhov twg ib qho ntawm cov kab sib txuas ntev dua li lwm qhov, nws yuav tsum tau muab faib ua ob thaj tsam - duab plaub thiab daim duab peb sab.
Ua lawv cov lej hauv lub laij lej sib cais thiab tom qab ntawd ntxiv lawv.