Tajumma
Anrar neɣ Tajumma d akat i kra n tama yettwasuttlen deg kra n tɣult ɣef tiggi, d talɣa ifraren deg-s n tama yettwasuttlen gar n kuẓ (4) n izelman s yiwet n teɣzi anda sin deg-sen d imsadaɣen ma d sin niden d ibeddayen yakk d umezwaru. Anecta ad yili s talɣa n umkuẓ. Seg talɣa ayi ad tili tsuddemt n yakk talɣiwin n tjummiwin niden, mi ara ad tili teɣzi n izelman-a d yiwet tigget n wakat n teɣzi, imir-nni tama yettwasuttlen gar-asent yettumeggez d yiwet n tigget n wakat n tjumma. Ihi, ma yella-d wemkuẓ teɣzi n yebdi-ines 1 m, tajumma-ines ad tegdu 1 m²
Asiden n tjumma yezmer ad yili s wemdan n imkuẓen n tigget n tjumma tamurant d tummidt.
Deg unagraw agreɣlan n tiggtin, tigget n wakat n tjumma tga d amiter amkuẓ (m²), dɣa amiter amkuẓ iga d tajkmma n yibdo teɣzi-ines 1 m. Akken illant waṭas n tiftarin yettwassnen i tjummiwin n talɣiwin ifraren am ikerdisen d iserman d twinas. S usemres n taftarin-a yezmer ad yili usiden n tjumma n yal ibdi s wegzam n yibdiyen ɣer ikerdisen neɣ ɣer twinas i tuwwit (aḥelli) n talɣiwin tuzligin yakk d tilas
Tigda i wsiden n tjumma[ẓreg | ẓreg aɣbalu]
D agejdam d akken tajumma n wesrem i d-iqqaren d akken tajumma n wesrem tegda teɣzi-ines × tehri-ines, dɣa anecta d ayen izemren a d-ittwakez war anza fell-as s turrit n tamawt mi ara ad ittwaqelled wesrem tehri-ines d tigget ma d teɣzi-ines d kra n wemdan seg tiggtin, ad yettwala d akken amdan n tiggtin timkuẓin i d-issiliɣen tajumma n wesrem tegda amdan n tiggtin tizegrarin (n teɣzi) i d-issiliɣen teɣzi n wesrem, yerna s tmerniwt n wemdan n tiggtin n teɣzi ad yettwala d akken tajumma n wesrem trennu s yiwen n watih, s wanecta ad ibin d akken tajumma n wesrem tegda teɣzi-ines × tehri-ines.
- Tajumma n ukerdis = ½ × azadur × tiddi, s tira deg tugna: anda: b d teɣzi n uzadur, ma d h d teɣzi n tiddi.
- Tajumma n tiggi n twinest anda: r d azgen n ukdu n twinest.
- Tajumma n tiggi n tuzza anda: r d azgen n ukdu n tuzza.
- Tajumma n uzunglay: Pi () × azgen n ukdu n ugellus ameqran × azgen n ukdu n ugellus ameẓyan
- Akat n tjummiwin ticuranin d tid yettwasuttlen yezmer ad yili s usemres n tussna n uneẓlay d weɣrad
- Tajumma n umkuẓ = teɣzi n yibdi L² neɣ A = L2
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