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Video: Muaj pes tsawg square inches yog 6 nti round yeeb nkab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Circumference & Thaj Chaw
| Loj hauv Ntiv | Lub voj voog Ntiv | Thaj tsam hauv Square Inches |
|---|---|---|
| 5 1/2 | 17.280 | 23.760 |
| 5 3/4 | 18.060 | 25.970 |
| 6 | 18.850 | 28.270 |
| 6 1/4 | 19.640 | 30.680 |
Ib yam li ib tug yuav nug, ua li cas koj xam square inches hauv cov yeeb nkab?
Ib lub yeeb nkab qhib tuaj yeem ntsuas hauv square inches
- Siv daim kab xev ntsuas kom pom qhov dav ntawm cov yeeb nkab qhib hauv ntiv tes.
- Faib txoj kab uas hla los ntawm ob mus nrhiav lub vojvoog sab hauv ntawm cov yeeb nkab qhib.
- Siv cov qauv no los nrhiav tus naj npawb square inches hauv koj cov yeeb nkab qhib: sab hauv lub vojvoog x hauv lub vojvoog x 3.1415.
muaj pes tsawg square inches nyob rau hauv ib lub voj voog 12 nti? Yog li yog hais tias lub vojvoog ntawm lub lub voj voog yog 12 ", ces cheeb tsam "A" yog (kwv yees) 3.14 * 12 3.14 * 144 = 452.16 square inches . Yog txoj kab uas hla lub voj voog yog 12 ", ces lub vojvoog yog 6" (ib nrab ntawm txoj kab uas hla), thiab cheeb tsam "A" yog (kwv yees) 3.14 * 6^2 lossis txog 113.04 sq . hauv.
Ua li no, pes tsawg square inches nyob rau hauv ib lub voj voog?
Koj tuaj yeem nqa lub vojvoog uas yog ib nrab ntawm txoj kab uas hla, yog li 1, thiab square nws, yog li 1, thiab muab nws los ntawm pi (3.141593). 1 zaug pi yog pi ces koj teb yuav yog 3.141593 m² os . Koj tuaj yeem hloov pauv raws li koj xav tau. Tus qauv rau cheeb tsam ntawm lub voj voog yog Area = pi(radius²).
Dab tsi yog thaj tsam ntawm 2 nti voj voog?
Yog 2 nti radius, ces siv cov mis ntawm Thaj chaw = 2 *Pi*radius^ 2 ..lub 2 *(3.14)* 2 ^ 2 == 2 *(3.14)*4 == kwv. 25.12 m² os ntiv tes . Tam sim no, yog tias koj txhais tau tias a 2 nti txoj kab uas hla, qhov no txhais tau tias lub vojvoog yog ib nrab ntawm qhov ntawd lossis 1 nti . Yog li, tib lub mis tsuas yog r = 1 lossis 2 *(3.14)*(1^ 2 )
Pom zoo:
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