
S_ABCD = AB x AD
= (AB+BE) x AD ### BE//AD
= AE x AD
= AE x (AD + DF) ### DF//AE
= AE x AF
= 3*sqrt(2) * 4*sqrt(2)
= 24

S_ABCD = AB x AD
= (AB+BE) x AD ### BE//AD
= AE x AD
= AE x (AD + DF) ### DF//AE
= AE x AF
= 3*sqrt(2) * 4*sqrt(2)
= 24
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