Lissafta jimillar fadin bango da net na ɗaki a m² — ban da tagogi da kofofi. Ya dace da fenti, fuskar bango ko tayal.
Kimanin amfani: fenti ~8–12 m²/l (fenti ɗaya), don fuskar bango duba na'urar lissafin fuskar bango, don tiles — da na'urar lissafin tile.
| Mataki | Dabara |
|---|---|
| Kewaye | 2 × (tsayi + faɗi) |
| Babban yanki | Kewaye × tsawo |
| Yankin buɗewa | (adadin tagogi × W × H) + (adadin kofofi × W × H) |
| Yankin net | Babban yanki − yankin buɗewa |
Na'urar lissafin tana ɗauka cewa duk bangon huɗu suna da tsayi ɗaya (ɗakin rectangular na yau da kullum).
Ee, idan za ka yi musu fenti daban ko ba a yi musu fenti ba — yankin net yana ba da adadin fenti/wallpaper da ya fi daidai. Don ƙiyasin kawai, za ka iya saita adadin tagogi/ƙofofi zuwa 0.
Na'urar lissafin tana aiki ne akan kewayen rectangular. Ga ɗaki mara daidaituwa, haɗa yankin kowane bango daban (tsayi × tsawo) kuma cire yankin buɗewa da hannu.
A matsakaici, lita 1 na fenti na rufe 8–12 m² (ya danganta da saman da nau'in fenti). Don shafa sau biyu, ninka amfani da 2.
e-Buhalteris na taimaka maka wajen bin diddigin kayan aiki, ajiya da kuɗaɗen aiki.
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