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Question

The triangle with vertices A(4, 4), B(-2, -6) and C(4, -1) is shown in the diagram. The area of Δ ABC is _______
315256_5a2397c27ccb4a7381cb4eb9f6626fa4.png

A
5 sq. units
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B
12 sq. units
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C
15 sq. units
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D
20 sq. units
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Solution

The correct option is C 15 sq. units
We know that the area of the triangle whose vertices are (x1,y1),(x2,y2), and (x3,y3) is =12|x1(y2y3)+x2(y3y1)+x3(y1y2)|

=12|4(6(1))2(14)+4(4(6))|

=12|4(5)2(5)+4(10)|

=12|30|

=15 sq. units

358283_315256_ans_e20041bec8bf4e0e839d4695b6e9edef.png

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