Answer:
The answer to your question is 30 u²
Step-by-step explanation:
Vertices
R(-4, 2)
S (1, 2)
T (-5, -4)
Find the area using matrices X Y
R -4 2
S 1 2
T -5 -4
R -4 2
=| (-4 x 2) + (1 x -4) + (-5 x 2) - [(-4 x -4) + (-5 x 2) + (1 x 2)]|
= |-8 - 4 - 10 - [ 16 - 10 + 2]|
= |-22 - [ 8]|
= |-22 - 8|
= |-30|
= |-30|
Area = 30 u²