MathematicsMedium202×since 2002Q5842The area of the quadrilateral ABCD\mathrm{ABCD}ABCD with vertices A(2,1,1),B(1,2,5),C(−2,−3,5)\mathrm{A}(2,1,1), \mathrm{B}(1,2,5), \mathrm{C}(-2,-3,5)A(2,1,1),B(1,2,5),C(−2,−3,5) and D(1,−6,−7)\mathrm{D}(1,-6,-7)D(1,−6,−7) is equal to :A48B8388 \sqrt{38}838C54D9389 \sqrt{38}938Check answerSkip