The area of a triangle with vertices A(3, 0), B(7, 0) and C(8, 4) is

Given,


 


Vertices of the triangle are,


 


 


 


A (x1, y1),


 


 


 


B (x2, y2) and


 


 


 


C (x3, y3)


 


 


 


By using the formula;


 


 


 


We have;


 


 


 


Area of triangle =|  |


 


 


 


=|


 


 


 


=| |


 


 


 


=| |


 


 


 


= 8


 


 


 


Hence, the required area of ΔABC is 8.

8