Each edge of the cube shown above has length n. What is the perimeter of quadrilateral ABDE?
A.2n(1+√2)
B.n√2
C.4n√2
D.4n
E.2n2
我的答案:
A.fff\(2n(1+\sqrt2)\)/fff
B.fff\(n\sqrt2\)/fff
C.fff\(4n\sqrt2\)/fff
E.fff\(2n^2\)/fff
(Official1-70可直接使用)
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