Cov txheej txheem:

Yuav ua li cas koj xam thaj tsam ntawm lub qhov rais?
Yuav ua li cas koj xam thaj tsam ntawm lub qhov rais?

Video: Yuav ua li cas koj xam thaj tsam ntawm lub qhov rais?

Video: Yuav ua li cas koj xam thaj tsam ntawm lub qhov rais?
Video: Yuav tawm ntawm txoj kev txom nyem tau li cas? 2024, Kaum ib hlis
Anonim

Cov cheeb tsam ntawm ib daim duab plaub qhov rai Luas = 1.2 x 2.7 = 3.24 m2. Muaj tsib daim duab plaub qhov rais . Multiply cheeb tsam ntawm ib qhov rai Luas = 5,24 x 5 = 16,2 m2.

Raws li, koj ua li cas xam thaj tsam ntawm lub qhov rais arched?

Muab cov radii ua ke, ces muab cov khoom los ntawm 3.14. Faib tus lej ntawd los ntawm 2 mus nrhiav tus cheeb tsam ntawm arch . Piv txwv li, yog lub vojvoog kab rov tav yog 6 ntiv tes thiab lub vojvoog ntsug yog 3 ntiv tes, muab 6 los ntawm 3 kom tau 18; muab 18 los ntawm 3.14 kom tau 56.52; thiab muab faib los ntawm 2 kom tau 28.26 square inches.

Ib yam li ntawd, koj yuav nrhiav tau lub tshuab xam zauv cheeb tsam li cas? Xam thaj tsam li Square Footage

  1. Yog tias koj ntsuas thaj tsam square lossis duab plaub, muab qhov ntev ntev ntev; Length x Dav = Area.
  2. Rau lwm cov duab hauv cheeb tsam, saib cov qauv hauv qab no los xam Cheeb Tsam (ft2) = Square Footage.

Ib yam li ib tug yuav nug, ua li cas koj ua haujlwm tawm m2 ntawm lub qhov rais?

Xam cov square footage ntawm lub qhov rais hauv ob peb kauj ruam xwb

  1. Nqa ib daim kab xev ntsuas hla hauv qab ntawm lub qhov rais iav. Sau qhov ntsuas hauv nti.
  2. stretch daim kab xev los ntawm hauv qab mus rau saum. Sau qhov ntsuas hauv nti.
  3. Muab ob tug lej ua ke.

Dab tsi yog tus qauv los nrhiav thaj tsam ntawm parabola?

Siv qhov kev ncua deb ntawm lub hauv paus thiab lub vertex los ua qhov siab ntawm qhov cheeb tsam parabolic . Cov cheeb tsam yog (2/3) b h. Yog hais tias lub sab yog linear, lub cheeb tsam yog (1/2) b h. Yog hais tias ob sab yog cubic, lub cheeb tsam yog (3/4) b h.

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