A
=
b
.
a
____________________
A
=
l
.
l
____________________
A
=
B
.
a
____________________
A
=
D
.
d
:
2
____________________
A
=
(
B
+
b
)
:
2
.
A
____________________
A
=
perímetro
.
apotema
:
2
____________________
____________________
A
=
B
.
A
:
2
____________________
A
=
C
.
C
:
2
____________________
____________________
