txhawm rau ntsuas qhov khoom mus rau qhov loj dua, koj tsuas yog muab txhua qhov loj me los ntawm qhov ntsuas qhov xav tau. Piv txwv li, yog tias koj xav siv qhov ntsuas qhov ntsuas ntawm 1: 6 thiab qhov ntev ntawm cov khoom yog 5 cm, koj tsuas muab 5 × 6=30 cm kom tau qhov tshiab.
Yuav ua li cas xam cov duab kos?
Nrhiav seb qhov ntsuas ntawm daim duab yog dab tsi. Ntsuas qhov deb ntawm daim duab siv tus pas ntsuas (los yog suav cov squares, yog tias qhov kev xaiv). Multip the distance you measure by the scale muab qhov nrug deb ntawm lub neej tiag.
Yuav ua li cas xam cov nplai ntawm daim duab qhia?
Ua ntej, nrhiav koj tus kheej ib daim ntawv qhia. Tom qab ntawd, siv ob lub ntsiab lus, nrhiav qhov nrug ntawm daim duab qhia chaw thiab qhov deb tiag tiag. Tom ntej no, koj faib qhov tseeb nrug los ntawm qhov ntsuas qhov deb ntawm daim ntawv qhia, thiab nrhiav koj qhov ntsuas.
Koj hloov qhov loj npaum li cas rau qhov ntsuas?
Yuav hloov qhov ntsuas mus rau qhov ntsuas loj, tsuas yog muab qhov ntsuas tiag tiag los ntawm qhov ntsuas ntsuas. Piv txwv li, yog tias qhov ntsuas qhov ntsuas yog 1: 8 thiab qhov ntsuas qhov ntev yog 4, muab 4 × 8=32 los hloov.
Qhov piv txwv ntawm daim duab qhia yog dab tsi?
Daim ntawv qhia teev yog hais txog kev sib raug zoo (lossis piv) ntawm qhov deb ntawm daim duab qhia thiab qhov sib thooj nyob rau hauv av. Piv txwv li, ntawm daim ntawv qhia 1:100000, 1cm ntawm daim ntawv qhia sib npaug 1km hauv av.
