Q28 of 110 Page 270

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The vertices of a a ABC are A(-2, 4), B(2, -6) and C(5, 4). The area of a ABC is


To find: Area of ABC


Given: A(-2,4), B(2,-6) and C(5,4)


Formula used:


We have, A(-2,4), B(2,6) and C(5,4)



Expanding along R1


⇒


⇒


⇒


⇒


⇒


⇒ 35 sq. units

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If the points A(3, -2), B(k, 2) and C(8, 8) are collinear then the value of k is