Question

the area of the triangle formed by point A(0,1),B(0,5)C(3,4)is

Answer 1

A (0,1)
B (0,5)
C (3,4)
Area of a triangle =1/2 [x1(y2-y3)+x2(y3-y1)+x3(y1-y2)]
=1/2[0(5-4)+0(4-1)+3(1-5)]
=1/2 (0+0-12)
=1/2×-12=-6
area cannot be negative
Therefore, area of the triangle is 6 sq.cm.
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