Lub cubic meter ntawm spruce yog ib qho yooj yim los txiav txim txawm rau cov neeg tsis paub. Hauv phau ntawv qhia no koj yuav pom tias muaj pes tsawg cubic meters qhov nruab nrab spruce pob tw muaj thiab koj tuaj yeem suav tus nqi koj tus kheej thiab hloov mus rau hauv cubic meters.
Puas muaj pes tsawg cubic meters ib spruce?
Lub cubic meter ntawm ib spruce feem ntau yog nyob nruab nrab ntawm 0.628 thiab 11.781 cubic meters, nyob ntawm seb lub cev ntev thiab qhov nruab nrab txoj kab uas hla. Txhawm rau xam cov khoom ntsuas, siv Huber tus qauv: Vfm=Pi / 4 × d² × L.
Puas muaj pes tsawg cubic meters ib spruce?
Lub cev ntev ntawm ib tug spruce feem ntau yog nyob ib ncig ntawm 20 mus rau 60 meters, thiab qhov nruab nrab txoj kab uas hla yog nyob ib ncig ntawm 20 mus rau 50 centimeters. Raws li, nyob ntawm cov ntoo tshwj xeeb, cov khoom 'meter' loj ntawm lub pob tw spruce feem ntau yog kwv yees li0.628 txog 11.781 cubic meters..
Dab tsi yog qhov cubic meter ntawm spruce ntoo?
Ib lub cubic meter ntawm cov ntoo spruce sib raug rauib lub cubic meter ntawm cov ntoo lojntawm tsob ntoo spruce lub cev yam tsis muaj qhov chaw muaj cua. Kev ntsuas yog luv li "fm" lossis qee zaum tsuas yog "F". Feem ntau, qhov cubic meter feem ntau yog siv los kos lub cev ntawm cov ntoo uas tsis tau ua tiav ntxiv.
Kuv yuav txiav txim siab qhov cubic meter ntawm ib spruce li cas?
Xaiv lub cubic meter ntawm ib spruce siv Huber's mis:Vfm=Pi / 4 × d rau lub hwj chim ntawm 2 × L
- Vfm=ntim in cubic meters
- Pi=lub voj voog 3, 1416
- d=center diameter
- L=trunk length
Qhov tseem ceeb: Yog tias koj xav xam lub cubic meter yam tsis muaj tawv, koj yuav tsum rho tawm ib mus rau peb centimeters nyob ntawm qhov nruab nrab txoj kab uas hla.
Tip
Hloov cov khoom ntsuas mus cubic meters
Lub cubic meter (rm lossis R luv luv) lossis stere yog qhov ntsuas ntawm cov ntoo sib dhos nrog rau nws qhov khoob. Yog li ntawd nws yog ib txwm loj dua lub meter khoom. Txoj cai ntawm tus ntiv tes xoo: 1 sc=1, 4 rm.
