Neman ƙarar prism: dabara da ayyuka

A cikin wannan ɗaba'ar, za mu dubi yadda za ku iya samun ƙarar prism da kuma nazarin misalan warware matsaloli don gyara kayan.

Dabarar ƙididdige ƙarar prism

Girman priism daidai yake da samfurin yanki na tushe da tsayinsa.

V=S_main ⋅ h

• S_main - yanki mai tushe, watau a cikin yanayinmu, mai kusurwa huɗu ABCD or Farashin EFGH (daidai da juna);
• h shine tsayin prism.

Tsarin da ke sama ya dace da nau'ikan prisms masu zuwa: 

• madaidaiciya - haƙarƙari na gefe suna tsaye zuwa tushe;
• daidai - prism kai tsaye, tushen wanda shine polygon na yau da kullum;
• m - haƙarƙari na gefe suna samuwa a wani kusurwa dangane da tushe.

Misalan ayyuka

Aiki 1

Nemo ƙarar prism idan an san cewa yanki na tushe shine 14 cm²kuma tsayin shine 6 cm.

Yanke shawara:

Muna maye gurbin sanannun dabi'u a cikin dabara kuma mu sami:

V = 14cm² 6 cm = 84 cm³.

Aiki 2

Girman prism shine 106 cm³. Nemo tsayinsa idan an san cewa yanki na tushe shine 10 cm².

Yanke shawara:

Daga dabarar ƙididdige ƙarar, yana biye da cewa tsayin yana daidai da ƙarar da aka raba ta yanki na uXNUMXbuXNUMXbthe tushe:

h = V/S_main = 106 cm ba³ / 10cm ku² = 10,6cm.