Q. 153.7( 3 Votes )

The area of the triangle formed by the points P(0,1), Q(0,5) and R(3,4) is
A. 16 sq. units

B. 8 sq. units

C. 4 sq. units

D. 6 sq. Units

Answer :

If (x1, y1), (x2, y2), (x3, y3) (x1, y1) (x2, y2), (x3, y3) are the vertices of a triangle then its area is given by


Area = |1/2 (x1(y2 −y3)+x2 (y3 −y1 )+x3 (y1 −y2 ))|


Area = [(0(5-4)+0(4-1)+3(1-5)]


| [-12]|


6 sq. units

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