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asked by (140 points)

In which,

  • AB || DC
  • AB=77cm
  • BC=25cm
  • CD=26cm
  • DA=26cm

1 Answer

0 votes
answered by (7.2k points)
A
=
a
+
b
 
2
 
h
=
77
+
25
 
2
·
26

=1326

...