Question

find the area of triangle whose vertics are (1.-1) (-4.6) (-3,-5)

Answer 1

area of tingle=1/2(X1(y2-y3)+x2(y3-y1)+X3(y2-y3))
=1/2(1(6+5)-4(-5+1)-3(-1-6)
=1/2(11+16+49)
=1/2(76)
=38 units