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Wannan ɗaba'ar tana gabatar da dabaru waɗanda za a iya amfani da su don nemo radius na ƙwallon (Spere) da aka rubuta a cikin dala na yau da kullun: triangular, quadrangular, hexagonal da tetrahedron.
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Formula don ƙididdige radius na ball (Sphere)
Bayanin da ke ƙasa ya shafi . Dabarar gano radius ya dogara da nau'in adadi, la'akari da zaɓuɓɓukan da aka fi sani.
Dala triangular na yau da kullun
Akan hoton:
- a - gefen gindin dala, watau su ne daidai sassan AB, AC и BC;
- DE – tsayin dala (h).
Idan an san ƙimar waɗannan adadi, to, sami radius (r) Ƙwallon da aka rubuta za a iya ba da shi ta hanyar dabara:
Wani lamari na musamman na dala triangular na yau da kullun shine daidai. A gare shi, dabarar gano radius shine kamar haka:
Dala huɗu na yau da kullun
Akan hoton:
- a – gefen gindin dala, watau AB, BC, CD и AD;
- EF – tsayin dala (h).
radius (r) Ana lissafta ball/Sphere da aka rubuta kamar haka:
Dala hexagonal na yau da kullun
Akan hoton:
- a – gefen gindin dala, watau AB, BC, CD, DE, EF, OF;
- GL – tsayin dala (h).
radius (r) Ball/Sphere da aka rubuta ana ƙididdige su ta hanyar dabara:
