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Mathematics
Mathematics
Problem
Points
A
(
0
,
0
)
A(0,0)
A
(
0
,
0
)
,
B
(
4
,
0
)
B(4,0)
B
(
4
,
0
)
and
C
(
4
,
3
)
C(4,3)
C
(
4
,
3
)
are three vertices of a quadrilateral
A
B
C
D
ABCD
A
B
C
D
. The fourth vertex is
D
(
x
,
3
)
D(x,3)
D
(
x
,
3
)
with
x
>
4
x>4
x
>
4
. If the perimeter of
A
B
C
D
ABCD
A
B
C
D
is
18
18
18
units, determine the value of
x
x
x
correct to one decimal place.
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