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2014-03-23T14:15:17+02:00
AB=L
BC=l
AA'=h
Volum=L*l*h=2 \sqrt{5} *3 \sqrt{2} *4 \sqrt{10} =24 \sqrt{100} =240
Aria=2(L*l+L*h+l*h)=2(2 \sqrt{5} *3 \sqrt{2} +2 \sqrt{5} *4 \sqrt{10} +3 \sqrt{2} +4 \sqrt{10} )=2(6 \sqrt{10} +6 \sqrt{50} +8 \sqrt{20}) =12 \sqrt{10} +12 \sqrt{50} +16 \sqrt{20}
diagonala= \sqrt{20+18+160} =\sqrt{198}