Date: 2007-05-11 06:00 pm (UTC)
From: [identity profile] starmaugli.livejournal.com
Интересно эту твою задачку решили?
По моему это пирамида в основании которой лежит прямоугольный треуголник, тогда сатновится известно растояние АВ=5... может это поможет?
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