1.

The area of the triangle formed by the points A(2,0), B(6,0) and C(4,6) is A. 24 sq. unitsB. 12 sq. unitsC. 10 sq. unitsD. none of these

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 = \(\frac{1}2\)[(2(0-6)+6(6-0)+4(0-0)]

⇔ \(\frac{1}2\)[-12+36+0]

⇒ 12 sq. units



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