Question

If the area of a triangle is 30.5 sq.units with vertices(3,8),(k,2) and (5,1), then k is​

Answer 1

Answer:

Area of triangle having vertices as (x1,y1),(x2,y2),(x3,y3) is given as 

=21∣∣∣∣∣∣∣∣x1x2x3y1y2y3111∣∣∣∣∣∣∣∣

⇒35=21∣∣∣∣∣∣∣∣25k−644111∣∣∣∣∣∣∣∣

⇒35=21∣2(0)