A
B
≈
1
0
.
0
9
A
C
≈
9
.
0
1
r
≈
2
.
8
2
a
r
e
a
(
I
D
E
)
≈
3
.
6
5
a
r
e
a
(
A
B
C
)
≈
4
1
.
8
0
A
B
×
A
C
×
a
r
e
a
(
I
D
E
)
≈
3
3
2
.
1
0
2
r
×
a
r
e
a
(
A
B
C
)
≈
3
3
2
.
1
0