Square bututu sunan ne ga square bututu da rectangular bututu, wato, karfe bututu tare da daidai da kuma m gefen tsawo.An yi na birgima tsiri karfe bayan aiwatar jiyya.Gabaɗaya, karfen tsiri yana buɗewa, an daidaita shi, an gurɓata shi da waldashi don samar da bututu mai zagaye, sannan a naɗe shi cikin bututu mai murabba'in f...
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