Cube cut

The cube ABCDA'B'C'D ' has an edge of 12cm. Calculate the area of diagonal cut B DD'B '.

Correct result:

S =  203.6468 cm2


a=12 cm u1=2 a=2 12=12 2 cm16.9706 cm  S=u1 a=16.9706 12=144 2=203.6468 cm2

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