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Mathematics
Mathematics
Problem
Calculate the area of the triangle with vertices
P
(
2
,
−
1
)
P(2,-1)
P
(
2
,
−
1
)
,
Q
(
5
,
3
)
Q(5,3)
Q
(
5
,
3
)
and
R
(
−
1
,
4
)
R(-1,4)
R
(
−
1
,
4
)
. a)
27
27
27
b)
23
2
\dfrac{23}{2}
2
23
c)
27
2
\dfrac{27}{2}
2
27
d)
25
2
\dfrac{25}{2}
2
25
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