三棱柱ABC-A1B1C1中,AB=根号2a,BC,AC,AA1的长均为a,A1在底面ABC内的射影O在AC中点,求此三棱柱的侧面积答案是((2+根号3+根号7)/2)*a^2
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![三棱柱ABC-A1B1C1中,AB=根号2a,BC,AC,AA1的长均为a,A1在底面ABC内的射影O在AC中点,求此三棱柱的侧面积答案是((2+根号3+根号7)/2)*a^2](/uploads/image/z/5344993-1-3.jpg?t=%E4%B8%89%E6%A3%B1%E6%9F%B1ABC-A1B1C1%E4%B8%AD%2CAB%3D%E6%A0%B9%E5%8F%B72a%2CBC%2CAC%2CAA1%E7%9A%84%E9%95%BF%E5%9D%87%E4%B8%BAa%2CA1%E5%9C%A8%E5%BA%95%E9%9D%A2ABC%E5%86%85%E7%9A%84%E5%B0%84%E5%BD%B1O%E5%9C%A8AC%E4%B8%AD%E7%82%B9%2C%E6%B1%82%E6%AD%A4%E4%B8%89%E6%A3%B1%E6%9F%B1%E7%9A%84%E4%BE%A7%E9%9D%A2%E7%A7%AF%E7%AD%94%E6%A1%88%E6%98%AF%28%EF%BC%882%2B%E6%A0%B9%E5%8F%B73%2B%E6%A0%B9%E5%8F%B77%EF%BC%89%2F2%29%2Aa%5E2)
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