calculating 4sided place with angles diagonal given?

Vasan

New member
Please help to calculate 4 sided area
1) AB=8.4 M, BC=1.2 M ,CD=13.2M,AD=11.8 METER
AC= 9.2 M Angle A =90degree Ange B =121 degree. Angle C=104degree.,Angle d=45degree.
Please show how to calculate plese at the earlist
 
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